For some reason I don't like the quality of the pic, or maybe it was some effect you did to it, can't tell.
Another thing, I don't know if pink really suits this character, for pink being trendous to suit a girly/cute sig better than a fighter guy one, but maybe the request was a sig in pink-ish.
Then the brushing abound the character is kinda chaotic and randomized, being on purpose or not it's how I see it, it seems to be your style though since you do it repeatedly.
It seems to me that either you don't put much effort in it anymore, which is fine because making sigs wont put food on your table, or that you've ran out of ideas and thus you just randomize alot more.
Don't take me wrong, I'm not saying it looks bad at all, just that by now I think you should be able to improve your style, because it seems to me you have potential to do better than this.
The sig looks good nevertheless.