Hey nibble,
You're right, those feet seem a little flat and soft, I didn't pay enough attention to them, so I'm posting the image with the corrections. I also worked a little bit more on the head, mouth and teeth (I want him to be in a scene making a stereotyped villain laugh), the feet are now more pointed, structurized and evil-like, which makes him even badder. I added to the model a top hat, like the ones the typical cartoon villain who ties the terrified girl to the train tracks usually has. The skin is now furry-like, but it's not the final texture.
This character is one of six I'm creating for a short film about bugs, which turns to be my final animation proyect in the career of Graphic Design, Animation and Multimedia I'm taking here in Mexico. As I'm finishing to model them I'll be posting my results, so you'll be hearing from me soon.
Thanx for the comments!