i think its pretty nice. Try making the armor on his face look more like one thing, for example the fringes on the side of his head, try making those connect to his ears more. and maybe make his legs a lil thicker or something ^^
other than that I think it looks really cute, tho!
(EDIT: I think you forgot to make his teeth stretch beyond his mouth too. Refer to original design if you don't know what I mean)