For the most part, it looks decent, though I think the legs might need to be longer, the head sticking out not as much, and the arms more equal in length.

Cartoony anatomy comes in many forms, but generally they all maintain close to realistic human proportions, except for breaking those rules in well thought-out ways. You should check out different examples of styles similar to what you want, and first try to draw how they do, so you can understand why they do what they do. Try picking a favorite cartoon character and replicating them as closely as you can, and see what you learn from it!