{"id":"vis-hs-fundraiser-banner","audience":"high-school","category":"image-video","track":"visual","technique":"constraints","title":"Get a fundraiser banner image that's readable from the road","free":false,"task":"Your class is holding a car wash fundraiser and wants a roadside banner image made in Canva's AI tool. Get Claude to write one paste-ready prompt, plain text, under 90 words. It must say a wide 3:1 banner, allow only the text \"CAR WASH $10\" in huge letters (the current price), show only bubbles, a sponge and a bucket with no people or cars of real brands, and name both hex colors.","materialLabel":"The brief (attached to your prompt automatically)","material":"Class of 2028 car wash - Saturday, Sept 20, 9am to 1pm, Main St. gas station lot\n\nPrice: we said $8 in the first flyer. Student council voted Sept 2 to make it $10 (supplies cost more).\n\nBanner: printed on vinyl, 6 feet by 2 feet, hung on the fence. Drivers see it from the road at 30 mph, so only a few big words.\n\nColors: class colors are cherry red #C1121F and sky blue #48CAE4.\n\nIdeas from the class chat:\n- \"Put a photo of us in swimsuits washing a car\" (no)\n- \"Add a famous luxury car brand's sports car with its logo\"\n- \"List the date, time, address and that we take Venmo\"\n\nLook: bright, bold, cartoon bubbles, a big yellow sponge, a bucket.","rules":[{"type":"maxWords","max":90},{"type":"plainText"}],"mistakes":[{"title":"Using the old price","why":"The notes say $8 first; the AI may use it.","fix":"Add: \"The only text is CAR WASH $10.\"","checks":["r0"]},{"title":"Too many words","why":"The AI adds date, address and Venmo, unreadable at 30 mph.","fix":"Add: \"No other words.\"","checks":["r0"]},{"title":"Students and brand cars","why":"The AI follows the chat ideas.","fix":"Add: \"Only bubbles, a sponge and a bucket. No people, no car brands or logos.\"","checks":["r1"]},{"title":"Colors by name","why":"The AI says \"red and blue\".","fix":"Add: \"#C1121F and #48CAE4.\"","checks":["r2"]},{"title":"Headings and notes","why":"The AI explains banner design.","fix":"Add: \"Output only the prompt, about 45 words.\"","checks":["plainText","maxWords"]}],"promptHints":[{"label":"Sets the banner shape","patterns":["3\\s*:\\s*1","wide"]},{"label":"Uses the current price","patterns":["\\$10"]},{"label":"Limits the text","patterns":["only (text|words)","CAR WASH"]},{"label":"Rules out people and brands","patterns":["no (people|brands|logos)"]},{"label":"Gives hex colors","patterns":["#C1121F","hex"]}],"hint":"A roadside banner gets a glance, not a read. Give the one line of text with the current price, the shape, and what stays out.","rubricLabels":["States a wide 3:1 banner and allows only the text 'CAR WASH $10' (not $8, no date, address or payment info)","Shows only bubbles, a sponge and a bucket, and says no people and no real car brands or logos","Names both hex codes (#C1121F and #48CAE4)"]}