hi scrpat317, i just wanna say thats a pretty damn good head. so youve only been using maya for a couple of months? thats really good! ive tried making heads but had bad success. but i havent tried in awhile. though I have made alot of observations and i would just like to point out some parts:

1) the eyelids are kinda too sharp edged..but then again maybe you will add some eyelashes so you wont really see that.

2) i see alot of 5 sided polys that i guess are acceptable but since you are animating it, its better to keep it to quads or tri's. quads are more preferred of course.

3) the lips are kinda a bit too womanly for a man. i dont know how to explain it..but i guess look in the mirror but dont just look straight at your lips, bend your head down a bit and twist it left and right as well to look at it from different view. But then again, maybe the lips that you are using as reference are like that.

4) cheeks look abit flat (not really) but i guess they need more form. maybe again the reference youre using has flattish cheeks.

Everything else I think are pretty good. I like the nose, it looks perfect. Just that try to reduce polys. Im sure you can get that same look with less polys.

Great job man! Keep updating I would like to see your progress so I can learn from you before I tackle head modeling. Cya!