I really like this design because, in addition to portray my favorite animal, is colored fine.
I like very much the details added to the cat's chest, and the eye color that stands out on grey fur.
In addition, the expression of cat is very cute, and looks like a lot of my own cat LOL
I think you had to treat more gold, because if there was I would think that the cat is waving in the air XD
But I really appreciate the design at a glance, whether as is colored both for the chosen subject and style that was used.