There's nothing wrong with having a bigger piece, you just need to be more aware of details on that size. Bringing the size down did get rid of the readability issues (mostly clothing). The items in his hand aren't as clear though. Your work with 3D is very obvious in the shading. It's good, but don't let it limit you. You can have a lot more fun with artistic interpretation, and it's much easier to get curves. The black outline is inconsistant, sometimes connected, sometimes not; sometimes colored, sometimes not. Pick one and stay with it. Very good for your first, lots of character.