Ok let me correct myself about the whole "don't use a mouse" thing from my last post
I, personally, don't like using a mouse. A lot of people make good art with a mouse and if you're satisfied with that then you can keep using it. But, in my opinion and with seeing a lot of the mouse art, I can still say with certainty that your art will look better with a tablet (unless its pixel art I guess but I don't do pixel so I can't say anything )
and that's not to say that it doesn't look good now, It does. The examples I saw (besides the joke one) where good, but, again in my opinion, your art would improve with a tablet.
I don't want this to come off as "oh I'm a know-it-all and you should listen to me because I'm good at art". If you want to keep using a mouse for your art, go for it, I'm just her giving my opinion. It is your choice whether you want to use a mouse or not, as long as your happy doing what your doing, I couldn't care less about what you use