Ambitious project and I commend you for the effort. However if I may make a few suggestions; Your paint is very thick. If I were you, I would strip the paint and start over with a coat of primer if necessary and multiple layers of a high quality paint such as Model Master Acryl or Tamaya. If you look in the custom help thread you will find numerous tutorials for painting eyes and Dark Artist made some great suggestions for 5:00 shadow. The eye brows seem to be one solid brush stroke, so again, try for a thinner paint, some feathering and maybe a different tone or two. The hair is also suffering from the thick paint and loss of detail. Try a very dark base coat, followed by a lighter tone and a much lighter shade for the top highlights.
It is a very long thread but the custom artist help in it has a wealth of information from some of our most talented members such as the assorted Josh's, Les, Mikey etc, and you will find it very helpful.
