The face is gorgeous! And the hair too! <3 But I think you should try and stay away from those dark black pits as the nostrils of the nose. They can be pretty distracting and a bit severe in color. Dark shades of brown would probably work better.
Yupp, as my art teacher tells me: black doesnt exist in nature. I did this pic a while ago so I can't remember whether I did use dark brown or black (it does look black though) but you're right I should have used a lighter color.