Hmmm... Not bad for your first human-like model.
I think your model is stuck in limbo between not having enough poly's and having too much. Let me explain.
The goal with doing a low poly model is to make it in such a way that is had the least amount of poly's while still preserving the detail. One of the ways in doing this is to make a high poly version of the model and then mapthe detail from the high onto the lower poly model through normal mapping. This makes it look high poly while still maintaining low poly counts.
The most common problem I see with new comers to 3D is that they think the subdivide/turbosmooth option is a cure all. These modifiers are only to be used to supplement good edge flow (edge flow is how the edges on the wireframe naturally flow around the model). Translation? If you don't have good edge flow, when you go to smooth it and make it more high poly, it's going to suck.
All in all, the form of your model isn't bad. But the amount of poly's you have, and the edge flow, is where you really need some work.
"If I have seen a little further it is by standing on the shoulders of Giants" - Isaac Newton
-Computer Animation Major @Baker.edu-
