I've been trying to do some other practise on drawing faces in my spare time, too. I did this one of Vanessa Paradis a few weeks back:
I'm currently working on another piece too, of Sky Ferreira. This one is going to be very realistic and detailed, but it isn't finished yet. I'll post it when it is. If anyone wants to see any more of my art, you can take a look at my art blog on tumblr, and follow me if you have tumblr too. I post fashion illustration work on there but also my own personal art projects and work that I've done on fine art courses in the past. Click here to take a look.