No flowers, no classroom background, no learning materials, no humans, blurry, low-quality image, pixelated, distorted colors, out of focus, poor composition, unrecognizable objects, incomplete artwork, incorrect proportions, missing details, amateurish, poorly executed, bad lighting, dull colors, irrelevant elements, low-resolution image, distorted perspective, incorrect perspective, poorly drawn flowers, unrealistic colors, unattractive composition, lack of depth, bad perspective, uninteresting, low-quality printing