Well done, bonrw1. I agree with what the other posters said in the previous posts. Additionally I would change the lighting for the final render. His face could be better illuminated. Did you try a three point lighting with a key-, fill- and back-light yet?
I really like what you did with the particle hair. The skin also looks good - although it has a bit too much red on my screen, but that could be the lighting, perhaps. The modelling looks also good. It would be interesting to see him from other angles to see more of the anatomy.
Nice work so far!