The tail on the bird looks somewhat flat, and its connection to the body seems weak. You might want to change up the flames as well... use a larger, single flame on the back... or, if the flames are supposed to be wings (it's hard to tell), two different flames with similar color distributions.
edit: Oh, and you may want to remove an item or two from your signature. The addition of the Pikachu personality quiz image puts your signature over the allowed size limit, which will almost definitely get you modded.