Mystery novel book cover — Posters & Covers Prompt

1. Copy the filled prompt from the box above and paste it into a Flux playground (fal.ai or Replicate) or your local ComfyUI Flux node.
2. Set the aspect ratio to the one named in the prompt; guidance 3.5 and 28–32 steps are a solid default for Flux Dev/Pro.
3. Flux follows literal descriptive language well: do not shorten the constraint sentences when you paste.
4. Fix a seed once a composition works, then vary only the style words to build a consistent set.

Key settings: guidance ~3.5 · 28–32 steps · fixed seed for consistent sets · aspect ratio from the prompt.

1. Open ChatGPT (link below) — the quick-use button pre-fills the filled prompt from the box above in a new chat.
2. Review the filled variables once; if a variable still shows brackets, replace it with your own words.
3. Send it. For image results, ask for one variation at a time ("same image, warmer light") instead of re-rolling everything.
4. Save the winning output and copy the final prompt into your notes — ChatGPT does not keep a prompt library for you.

1. Open Gemini and paste the filled prompt from the box above (or use Copy + Open below).
2. For image or video-capable tasks, Gemini routes to its media models automatically; state the format (aspect ratio / length) in the first line, as the prompt does.
3. Regenerate once rather than editing mid-chat if the first result misses the format; then refine with one change at a time.
4. Export text results to Docs/Sheets from the share menu when you need them in office formats.