The hair looks really good dave.
If this is really one of your first maya projects you should be very proud. You have shown masterful work in modeling, use of the hair system, uv'ing and texturing.
The only constructive critiques I can make is the studio set and the lighting of the scene could be better.
There is something about the flat area on the top of the cheek that seems unnatural to me. Not sure if it's an anatomical anomaly or just aesthetic.
But over all it's really good work. I am sorry more folks did not join in to the challenge. I started out with organic modeling but lately I have really just been focused on hard surface modeling. I will go back to organics at some point but I will probably try to learn the maya -> zbrush -> maya workflow as that seems to be the new hotness in organic modeling.
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675