Create a 3D cartoon character of a boy with exaggerated and expressive features

Create a 3D cartoon character of a boy with exaggerated and expressive features. He should have a big smile, large eyes, and a small, round nose. His hair is light brown and slightly messy. He wears a bright red t-shirt, blue shorts, and small sneakers. The boy has a playful and whimsical appearance, with slightly exaggerated body proportions to make him look cute and funny. The overall style is colorful and fun, with smooth, rounded edges typical of 3D animation. The background is a green screen to allow for easy editing."