Those are great pics. You're just being modest, which is fine, because no one likes an overt braggart. Unless you were going for a real specific effect, such as more drama, the lighting is fine. I can't see anything in particular to dislike about it. Then again, I'm not the Overlord of Photography...yet.
If I wanted to reach for a complaint, I could say that there's a flicker of overexposure on the bottom pic. Of course, there are varying reasons for that, based on camera settings and proximity of light source, particularly. But again, a bit of a reach.
Do you want more shadow or....was there a particular effect you were going for?
As far as playing with her eyes, I just used the lasso tool, created a path and played dj with the hue/saturation. I have a pen tablet, but just freehanded his one, with a regular mouse (which I hate using). Again, just for fun. Should've seen the freaky extremes, borderline horror stuff (villainous, deep, crimson eyes wouldn't make for a welcoming date...unless you're Satan)