Get a concert poster image with the corrected date

About this exercise

You're making the band's winter concert poster and want the art from Gemini. Get Claude to write one paste-ready prompt, plain text, under 100 words: a prompt paragraph and a last line starting "Avoid:". It must say vertical 2:3, allow only the text "WINTER CONCERT" and "DEC 12" (the corrected date), show the instruments your band actually has, and keep the bottom third empty for details.

Common mistakes when you ask AI for this

• Using the old date. The notes say Dec 5 first, and the AI may use it. Try: Add: "The only text is WINTER CONCERT and DEC 12."
• Fancy instruments you don't have. The AI adds a grand piano or violins because they look elegant. Try: List your instruments and add "Avoid: piano, strings."
• No room for details. The art fills the poster, so the time and place don't fit. Try: Add: "Vertical 2:3, bottom third empty."
• Write-up with headings. The AI explains poster design. Try: Add: "Output only the prompt and Avoid line."

What a strong prompt includes

• Sets the shape
• Uses the corrected date
• Limits the text
• Lists real instruments
• Adds an Avoid line

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