Hmm...He's pretty good, but I'm just going to suggest the things that jump out to me. You could make his cheeks more refined, so it's easier to tell where his construction is and his head looks less like a big triangle . I call it the "Aladdin effect" when character's features are just floating around somewhere around where they belong. maybe play with the proportions of his legs or torso a little bit.
Thanks for sharing.
*Sarcasm mode off*
again, JUST SUGGESTIONS
you're the one in art school x)
But uh, other than that....I say get this rabbit a show because...Spoots says so. Dammit.