DEMO BRIEF — fictional botanical illustration workshop Audience: adults trying botanical drawing for the first time. Voice: warm, clear, practical; no exaggerated promises. Deliverables: three short English headlines, an invitation of 80–110 words, and one square social image. Image: monochrome botanical fern illustration, dark warm background, restrained warm orange accent, no words or logos. Do not invent the date, venue, price or registration link; write [date], [venue], [price], [link] as placeholders. Use Nano Banana 2.1 for the image. One image only.