okay, constructive criticism
simply recoloring a character is really un-creative. Adding the hair is a good start to though. If you really want an acceptable avatar you have to keep making those kind of changes.
Alter the shoe design, get rid of the stripe and put some other design on it, put a zipper on it, give it some extra color stripes, give him boots, sandles, high heels, whatever.
Make the fur more diverse or something. Mix in a second color and use it to highlight various parts of the fur kind of like shadow's red only dont rip off his highlighting design, make your own. Change the stomach spot to be shaped like a different shape, a star, a triangle, etc.
Finally, adding more clothing peices helps. Give him a random belt, or glasses, or some other random item.
yeah thats probably really hard to read, so read this comic instead