Childhood Hero's self portrait

So I'm back in school now, and I thought I'd post up one of the assignments I've gotten for my Children's book Illustration class. Basically we have to do a self portrait that also includes our child hood heros. So growing up watching Ninja turtles and Batman: TAS, I figured I'd work those in some how. I've included all the stages of the process here just to give you an Idea of how I work. Heres the initial concept sketch's and thumbnail, the penciled image, a inked lighting study, the coloured piece, and the final finished image.

New Portrait

This new piece Is a 3 hour study I did in my heads and features class. It's a reductive model drawing done in vine charcoal. I was pretty happy with the way this one came out, at first when I did the angle study it didn't seem anything special. However, once I started to model the structure the picture just poped.

More Art work

So this here is a painting of my hand I did in my first year, this is the first time I've had a chance to scan it in. It's done with oils, and took a day a weekend I think, anyway I think it turned out ok needs more green and the shape got warped in the painting process but otherwise, I still like it over a year later.
This is a self portrait I did for my Principles of Drawing class, again from last year. Unfortunately the original is now framed behind glass so I couldn't take a photo, so all I have is this really bad copy from my e-mail. It's done with black and white conte on grey paper, and took able 8 hours spread over a weekend.