Feedback on Vector Art Rabbit Godzilla

Hey everyone,

Image link ----> http://imgur.com/0lSTRTW

Just slowly putting this movie-style poster together for a friend, it's kind of a christmas present but not really. It's meant to be some kind of rendition of a scene from the original Godzilla, but with this rabbit (my friends pet, named Thumper).

I'm thinking now might be a good point to go digital and do some vector art of this, but I just wanted to get some second opinions before investing more time into vectors and things. Thanks in advance for any critique, hints, and tips!