Create an original Happy Birthday image for BirthdayTo. Use case: a warm birthday thank-you card image with elegant celebratory accents. Style: retro risograph poster texture, limited colors, slight ink grain, bold shapes. Audience: polished, friendly, workplace-safe, and not too intimate. Canvas: 4:3 aspect ratio, simple card layout suitable for thanking guests after a birthday party. Palette: lavender, mint, cream, and candlelight gold. Primary decorative focus: party hats, supported by birthday party details. Text requirement: include only the exact readable words "Happy Birthday"; no misspellings, no fake names, no dates, no small filler text. Composition requirement: high-quality finished image, clear focal point, clean margins, useful copy space, no watermark. Safety requirement: no recognizable real people, no celebrity likeness, no public figure, no brand logo, no trademarked character, no copyrighted character, no visible address, no license plate, no private-property identifier.
