It looks pretty good, the mapping is alright but the flag could be smaller I think that would look better.
I also think that you should draw thicker likes because for example the eyes have pretty think outlines and in my opinion make them look a little weird like it looks for me like they have been glued on xD
So ye think you should draw thicker lines that will give more of an "edge" to everything.
Another thing that you should do is draw darker shadows and highlights because that will give your artwork more depth.