Contenu du pack

Un fichier SKILL.md (le guide pratique) + un modèle de départ. Aperçu :

Social Cover

When to use

• The user is publishing a WeChat official-account post and needs a cover image (often asks "what size, and where does the title go?").
• The user is posting to Xiaohongshu/Douyin and needs a 3:4 portrait cover, worried the title will be hidden behind the system UI.
• The user is posting to Weibo/X/Jike and needs a 16:9 or 1:1 image with a "click-worthy" look.
• The user runs a course/event/podcast and wants a consistent set of covers (define one spec, reuse it).
• The user already has a base image and needs the headline overlaid with safe margins to make a usable cover.

Workflow

1. Lock platform and size (input: publishing platform → action: look up the spec table → output: confirmed canvas spec)
   Ask where it will be published first, then set the canvas: WeChat post cover 2.35:1 (e.g. 900×383),
   Xiaohongshu 3:4 portrait (e.g. 1080×1440), Weibo/X 16:9 (e.g. 1200×675),
   square 1:1 (e.g. 1080×1080). Do one platform per image — no "one image for every platform."
2. Split the headline into three levels (input: article topic/title → action: three-level split → output: three-level copy)
   Main headline ≤ 12 Chinese characters (one-sentence hook; suspense is fine, clickbait is not),
   sub-headline ≤ 20 characters (say what it's actually about), plus an optional garnish tag
   (e.g. "Episode 3", "field-tested"). If the copy can't be locked down, get the user to decide the words first —
   the image comes second.
3. Pick a composition pattern (input: three-level copy → action: choose one of three → output: composition plan)
   Pattern A, centered: main headline as big centered type, generous whitespace, best for opinion/insight pieces;
   Pattern B, split columns: text left / image right (or vice versa), best for product/person introductions;
   Pattern C, stacked layers: image on the top 1/3, colour block + text on the bottom 2/3, best for events/courses.
   Mark the safe margins in the plan: keep 8–10% of each edge free of key text,
   and for Xiaohongshu leave 12% top and bottom (against the top bar and bottom caption overlay).
4. Set the colour mood (input: content emotion → action: pick colours → output: hex palette)
   Emotion first, then colours: celebratory/promo → reds/oranges; professional insight → deep blue/ink;
   fresh lifestyle → off-white/pale green. One primary + one accent + one text colour is enough —
   white text on dark backgrounds, dark grey/black text on light ones. Contrast guaranteed.
5. Write the image-gen prompt (input: spec + copy + composition + palette → action: fill the template.md skeleton
   → output: complete prompt)
   Write the prompt in English (image models handle English more reliably). It must include: canvas ratio,
   composition pattern, colour hex values, and a note on where to leave whitespace; Chinese headline text is always
   marked "leave blank space for title text, no text in image" — titles are overlaid afterwards,
   never trust the model to get Chinese right in one pass.
6. Generate and self-check (input: prompt → action: generate + verify → output: finished image or fix list)
   Check four things: ① no key element pushed outside the safe margins; ② the title area has enough
   whitespace for the overlay; ③ no garbled text or extra-finger-style AI giveaways; ④ still clear at thumbnail
   size (covers are often shrunk on phones). If any check fails, go back to step 5 and regenerate —
   never settle.

Aperçu du modèle

1. Composition checklist (pick one of three before starting, tick to confirm)

Platform size cheat sheet

• [ ] WeChat post cover: 2.35:1 (e.g. 900×383), watch out for rounded-corner cropping
• [ ] Xiaohongshu/Douyin cover: 3:4 portrait (e.g. 1080×1440), 12% safe zone top and bottom
• [ ] Weibo / X / Jike image: 16:9 (e.g. 1200×675)

Le pack de compétence lui-même (SKILL.md + modèle) est rédigé en anglais.

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