Image Prompting — Nano Banana & GPT Image 2

This skill writes image prompts. It does not generate images. The output is: model name + quality / size / aspect ratio + the prompt itself.

The body of this SKILL.md is intentionally thin so you cannot fake a result by reading it alone. The actual rules — what the models reward, what they punish, how to phrase a 5-slot template, when to add quality: high, when to use image grounding — live only in the reference files.

Route first — is this actually an image-prompt task?

• Motion, clips, montage (Seedance, Kling, Veo, any image-to-video): use the sibling video skill. This skill's storyboard and keyframe outputs feed it.
• No idea or script yet (user wants a concept or an ad scenario, not a picture): if the creative-director skill is installed, start there — it develops ideas and scripts for commercials and beyond (github.com/smixs/creative-director-skill).
• A concrete image is needed — this skill. Continue below.

Mandatory reading order — DO NOT WRITE A PROMPT WITHOUT THIS

Past attempts to write prompts directly from this skill body produced lazy, generic results. Each model has its own physics; common rules collapse into mush when applied without model-specific syntax. Read in this order before producing any prompt:

Step 1 — always read first → models.md