PROMPT:A joyful and mouth-watering horizontal social media banner for a street food festival, warm cream yellow backdrop with large cheerful 3D clay-aesthetic food illustrations, an oversized glossy hamburger with perfectly visible layers of fresh ingredients dominating the center right, a giant colorful donut with pink frosting and rainbow sprinkles to the left, a tall iced bubble tea cup with a fat straw, scattered suspended 3D mini elements including tiny tomatoes avocado halves and green leaves, a small round cartoon smiley face character peeking playfully from behind the burger, powerful playful mixed-weight typography at the top left reading "WEEKEND FOOD FESTIVAL" in large black letters, the word "Yummy!" in a bouncy handwritten script in warm orange, small polished subtitle "Good food · Good vibes · Good times", overall layout warm inviting and appetite-stimulating, high-end food marketing 3D illustration quality, 16:9 horizontal ratio