Requesting assistance with character faces.

[Azel_Coral]

I know this image is most likely disgusting to alot of you, but I need help finishing it. I know nothing about how to color, nor shade images. So, if I could get assistance with this it would be greatly appreciated.
I started some to show you what colors the diffrent parts of the face is. If this is not enough information then please by all means pm me or just post it here.

By the way, this is the main character of my game, Xzelene. This face is for a skit-like thing I have in my game.