I think it's great! I definitely recognize the dog and I like patterns that leave something to the imagination. Something I haven't mastered for sure. As far as the background goes I don't think there is a right or wrong. This is art, there will always be different perspectives and opinions. For me, the background really adds to the piece as a whole. It adds depth and makes it more than a tracing of a dog. For others it may take away from it. Always remember, Van Gogh sold 2 paintings and made enough money to maybe buy a couch. Nice job!