Those gradient meshes seem to work quite well for you. :D The face is so realistic, it almost seems like an impossible feat to create something like that in adobe illustrator and yet you proved me wrong. (I haven't used an version of Illustrator CS2 so I guess I should upgrade and learn a bit more >.<)
I use CS2. I learned how to use meshes due to a helpful tutorial online, and then a lot time fiddling with them.
That's me :-)