Cute trendy back-to-school T-shirt graphic on a blue background. An adorable fluffy raccoon facing forward with a playful expression, wearing oversized star-shaped sunglasses with bright hot-pink frames and turquoise-blue lenses, blowing a large pink bubblegum bubble. Surround the raccoon with colorful hand-drawn stars and small school-themed decorative sparkles. At the top, energetic playful lettering reads exactly: "BACK TO SCHOOL". Use bright pink, turquoise, purple, orange, white and yellow accents, youthful elementary-school aesthetic, polished cartoon illustration, expressive fluffy fur, clean bold outlines, vibrant colors, balanced centered composition, crisp screen-print quality, premium children's apparel design, no mockup, no person, no additional text.