Create a realistic 3D wallpaper for a children's YouTube channel. The scene should feature a bright, sunny sky with fluffy white clouds and a rainbow. In the foreground, there should be rolling green hills with wildflowers, a crystal-clear stream, and a charming wooden bridge. Include friendly animals such as rabbits, squirrels, and birds, as well as playful fantasy characters like a cute dragon and a friendly unicorn. The trees should have colorful leaves and some should bear fruit. The lighting should be warm and inviting, with soft sunlight casting gentle shadows. The textures should be detailed but retain a slightly cartoonish charm suitable for children.

verybadimagenegative_v1.3, ng_deepnegative_v1_75t, (ugly face:0.8),cross-eyed,sketches, (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, ((monochrome)), ((grayscale)), skin spots, acnes, skin blemishes, bad anatomy, DeepNegative, facing away, tilted head, {Multiple people}, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worstquality, low quality, normal quality, jpegartifacts, signature, watermark, username, blurry, bad feet, cropped, poorly drawn hands, poorly drawn face, mutation, deformed, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, extra fingers, fewer digits, extra limbs, extra arms,extra legs, malformed limbs, fused fingers, too many fingers, long neck, cross-eyed,mutated hands, polar lowres, bad body, bad proportions, gross proportions, text, error, missing fingers, missing arms, missing legs, extra digit, extra arms, extra leg, extra foot, ((repeating hair))