Nano Banana (image prompt craft)
Write prompts that get studio-quality images out of Nano Banana — Google's Gemini image model
(Nano Banana Pro = Gemini 3 Pro Image; the Flash variant is faster/cheaper). This is the
prompt-craft layer of a three-layer setup:
- Connection/API (model IDs, auth, the generate → upload to WoopSocial Media → attach flow) →
tools/integrations/nano-banana.md.
- Prompt craft (this skill) → how to ask for the right image well.
- In-skill application → e.g.
carousel-writer's image-prompt-pack.
Fast-moving area — re-verify model names/capabilities quarterly.
Reach for Nano Banana when… (match the job)
Its real strengths: legible in-image text (best in class), multi-image/character consistency,
conversational editing, and Search-grounded infographics. Reach elsewhere for
typography/layout-led design (→ ideogram) or surreal/fine-art aesthetics (Midjourney).
(Imagen, the former photoreal sibling, is deprecated — Gemini API shutdown Aug 17, 2026 — so
Google-side photoreal work now lands here.) Don't default it to every job. (Details:
references/when-and-how-to-prompt.md.)
Step 0 — Read the brand + the job
Load brand-profile.md (colours, visual style, do/don't). Identify the job (quote graphic /
carousel / thumbnail / infographic / product shot / background / ad / edit) and the platform
aspect ratio.
Step 1 — Write the prompt (natural language, not keyword spam)
Describe, don't pad. Include subject · composition/camera · action/context · lighting/atmosphere ·
style/medium · constraints + exact text. Drop "4k, masterpiece, trending on artstation" tokens —
modern Gemini models reason over natural language. Bake in the brand palette/style. Set the
aspect ratio. Iterate cheap at 1K, finalize at 2K/4K. See references/when-and-how-to-prompt.md.
Step 2 — Use the superpowers deliberately
- Text: put the exact words in quotes + font + placement; settle the copy first (the
text-first approach), keep it short, and verify the spelling in the output.
- Consistency: use reference images and a locked style description; generate a set one at
a time ("everything the same except X"); hold the aspect ratio; review for drift.
- Editing: natural-language changes to a hero image for locale/seasonal/A-B variants.
See references/text-and-consistency.md.
Step 3 — Pick the recipe
Adapt a pattern for the job (quote graphic, carousel set, thumbnail, infographic, product/lifestyle,
background, ad), with the right aspect ratio and brand grounding. See references/social-recipes.md.
Step 4 — Verify, disclose, ship
- Verify rendered text and any infographic data before publishing (the model can misspell /
misplace facts).
- Disclose AI generation per platform/region (Meta "Made with AI", EU AI Act); every image carries
a SynthID watermark (+ C2PA) — don't strip it or pass the image off as a non-AI photo.
- Ship: generate per the integration guide → upload bytes to WoopSocial Media → attach to the
post via
scheduling-and-queue. WoopSocial doesn't generate images.
Quality bar — self-check
- Did I match the tool to the job (and say when to use another model)?
- Is the prompt natural-language and specific (subject/composition/lighting/style/text), brand-
grounded, with the right aspect ratio?
- For text: exact words in quotes + font + placement, copy-first, spelling verified?
- For sets: references + locked style, one-at-a-time, reviewed for drift?
- Did I handle SynthID + disclosure, verify text/data, and refuse real people / IP?
- Did I point to
tools/integrations/nano-banana.md for the API + WoopSocial flow (no claim that
WoopSocial generates images)?
Edge cases & pushback
- Photoreal headshot / surreal art → suggest the better-fit model; don't force Nano Banana.
- "logo, 4k, masterpiece, trending…" → rewrite into a specific scene description; drop token spam.
- Real person / copyrighted character / brand style → refuse; offer an original alternative.
- "Post it as a normal photo" → SynthID + disclosure; don't disguise AI imagery.
- Long paragraph of in-image text → expect errors; shorten + verify (or finish in a design tool).
- "Generate it in WoopSocial" → WoopSocial doesn't generate; this skill prompts the model, then the
image is uploaded to Media and attached.
Related
tools/integrations/nano-banana.md — API/model IDs, auth, pricing, the upload-to-WoopSocial flow.carousel-writer (image-prompt-pack), reels-script — consuming skills; ideogram — typography sibling.brand-profile — the visual brand; caption-writer/hook-writer — the in-image copy.scheduling-and-queue — attach the image to a post and publish.
References
references/when-and-how-to-prompt.md — when to reach for it vs other models, and the prompt anatomy.references/text-and-consistency.md — the two superpowers: legible in-image text and multi-image consistency/editing.references/social-recipes.md — adaptable prompt patterns per social job + aspect ratios.references/examples.md — weak→strong prompts, a consistent carousel, an edit, and honest scope.
1---2name: nano-banana3description: Use to write great prompts for Nano Banana (Google's Gemini image model: Nano Banana Pro = Gemini 3 Pro Image) to generate or edit images for social media — the image-prompt-craft mini-skill. Run when the user wants a nano-banana / Gemini image prompt, an AI image for a post (quote graphic, carousel slide, thumbnail, infographic, product shot, ad creative), or conversational image editing. Reads brand-profile for brand colours/style. Strengths: best-in-class legible in-image text (route typography/layout-led design to ideogram), multi-image consistency, conversational editing, and Google's photoreal lane (Imagen deprecated); surreal art stays Midjourney's. Teaches prompt anatomy, the text-first approach, reference-image consistency, and per-platform aspect ratios. Honest: SynthID watermark + AI disclosure; never real identifiable people or copyrighted characters/logos; verify spelling/data. The API/connection and WoopSocial upload flow live in tools/integrations/nano-banana.md.4license: MIT5---6
7# Nano Banana (image prompt craft)
8
9Write prompts that get studio-quality images out of **Nano Banana** — Google's Gemini image model
10(**Nano Banana Pro = Gemini 3 Pro Image**; the Flash variant is faster/cheaper). This is the
11**prompt-craft** layer of a three-layer setup:
12
13- **Connection/API** (model IDs, auth, the *generate → upload to WoopSocial Media → attach* flow) →
14 `tools/integrations/nano-banana.md`.
15- **Prompt craft** (this skill) → how to ask for the right image well.
16- **In-skill application** → e.g. `carousel-writer`'s image-prompt-pack.
17
18> Fast-moving area — re-verify model names/capabilities quarterly.
19
20## Reach for Nano Banana when… (match the job)
21
22Its real strengths: **legible in-image text** (best in class), **multi-image/character consistency**,
23**conversational editing**, and **Search-grounded infographics**. Reach **elsewhere** for
24**typography/layout-led design** (→ `ideogram`) or **surreal/fine-art** aesthetics (Midjourney).
25(**Imagen**, the former photoreal sibling, is **deprecated** — Gemini API shutdown Aug 17, 2026 — so
26Google-side photoreal work now lands here.) Don't default it to every job. (Details:
27`references/when-and-how-to-prompt.md`.)
28
29## Step 0 — Read the brand + the job
30
31Load `brand-profile.md` (colours, visual style, do/don't). Identify the **job** (quote graphic /
32carousel / thumbnail / infographic / product shot / background / ad / edit) and the **platform
33aspect ratio**.
34
35## Step 1 — Write the prompt (natural language, not keyword spam)
36
37Describe, don't pad. Include **subject · composition/camera · action/context · lighting/atmosphere ·
38style/medium · constraints + exact text**. Drop "4k, masterpiece, trending on artstation" tokens —
39modern Gemini models reason over natural language. Bake in the **brand** palette/style. Set the
40**aspect ratio**. Iterate cheap at 1K, finalize at 2K/4K. See `references/when-and-how-to-prompt.md`.
41
42## Step 2 — Use the superpowers deliberately
43
44- **Text:** put the **exact words in quotes** + font + placement; settle the **copy first** (the
45 text-first approach), keep it short, and **verify the spelling** in the output.
46- **Consistency:** use **reference images** and a **locked style description**; generate a set **one at
47 a time** ("everything the same except X"); hold the aspect ratio; review for drift.
48- **Editing:** natural-language changes to a hero image for locale/seasonal/A-B variants.
49
50See `references/text-and-consistency.md`.
51
52## Step 3 — Pick the recipe
53
54Adapt a pattern for the job (quote graphic, carousel set, thumbnail, infographic, product/lifestyle,
55background, ad), with the right aspect ratio and brand grounding. See `references/social-recipes.md`.
56
57## Step 4 — Verify, disclose, ship
58
59- **Verify** rendered text and any infographic **data** before publishing (the model can misspell /
60 misplace facts).
61- **Disclose** AI generation per platform/region (Meta "Made with AI", EU AI Act); every image carries
62 a **SynthID** watermark (+ C2PA) — don't strip it or pass the image off as a non-AI photo.
63- **Ship:** generate per the integration guide → **upload bytes to WoopSocial Media → attach to the
64 post** via `scheduling-and-queue`. WoopSocial doesn't generate images.
65
66## Quality bar — self-check
67
68- Did I **match the tool to the job** (and say when to use another model)?
69- Is the prompt **natural-language and specific** (subject/composition/lighting/style/text), **brand-
70 grounded**, with the **right aspect ratio**?
71- For text: **exact words in quotes** + font + placement, **copy-first**, **spelling verified**?
72- For sets: **references + locked style**, one-at-a-time, reviewed for drift?
73- Did I handle **SynthID + disclosure**, **verify text/data**, and **refuse real people / IP**?
74- Did I point to **`tools/integrations/nano-banana.md`** for the API + WoopSocial flow (no claim that
75 WoopSocial generates images)?
76
77## Edge cases & pushback
78
79- **Photoreal headshot / surreal art** → suggest the better-fit model; don't force Nano Banana.
80- **"logo, 4k, masterpiece, trending…"** → rewrite into a specific scene description; drop token spam.
81- **Real person / copyrighted character / brand style** → refuse; offer an original alternative.
82- **"Post it as a normal photo"** → SynthID + disclosure; don't disguise AI imagery.
83- **Long paragraph of in-image text** → expect errors; shorten + verify (or finish in a design tool).
84- **"Generate it in WoopSocial"** → WoopSocial doesn't generate; this skill prompts the model, then the
85 image is uploaded to Media and attached.
86
87## Related
88
89- `tools/integrations/nano-banana.md` — API/model IDs, auth, pricing, the upload-to-WoopSocial flow.
90- `carousel-writer` (image-prompt-pack), `reels-script` — consuming skills; `ideogram` — typography sibling.
91- `brand-profile` — the visual brand; `caption-writer`/`hook-writer` — the in-image copy.
92- `scheduling-and-queue` — attach the image to a post and publish.
93
94## References
95
96- `references/when-and-how-to-prompt.md` — when to reach for it vs other models, and the prompt anatomy.
97- `references/text-and-consistency.md` — the two superpowers: legible in-image text and multi-image consistency/editing.
98- `references/social-recipes.md` — adaptable prompt patterns per social job + aspect ratios.
99- `references/examples.md` — weak→strong prompts, a consistent carousel, an edit, and honest scope.
social-media-skills