Getting there.
I've used the split polygon tool here, I'm going to shape the eye a bit more now.
I have extruded the eye socket a few times to start making the eye lids.
I've started tweaking the lip and extruded them inward some more.
Well here's where we are so far, its time another another base update, Base Mesh 16.
Once you have a good base head like this one its easy to use it for making other heads saving time.
Added a little more detail round the eye.

 

Inserted more detail around the eye.
Added more detail around the eye.
I've started to shape the eye.