That's from the Joan of Arc tutorial by Michel Roger: http://www.3dtotal.com/ffa/tutorials...c/joanmenu.php
I think taking a look at the underlying structure of the skull, and muscles will greatly help the form of your model. You generally want the edges to flow around the muscles, and contour the bones. This makes it much easier to animate, and tweak.
You poly count is also very high. I would try to bring it down. You could use more in the eyes though. Take a look through that tutorial. It should help you out.
Looks good for a first attempt.
Imagination is more important than knowledge.