This will be me when I start to do computer art...
Looks great! Not as good as the sketches with pencil and stuff, but still, its your first one with paint right? I have not even gotten to computer art so I cant say much... But I know that you will definitly get it going soon. Even though the resolution is low, I still think its good work. Figure looks fine, the head doesnt seem to be strange (well maybe the cat ears because of the difference in color).
So far, I think its good! Keep it rolling man! Just like Katamari!