Hmmm ... well I love the tiger you did. The one you have as your avy ... Colors are just great + everything else. Perhaps you should do more of drawings in that style?
I believe you could do so much better if you try hard enough, the tiger clearly shows that.
Well yes I have few pieces also that turned out great in quick time ... but most of the time things on comp take too long. I do it for weeks like few lines a day ... too lazy :p