I based myself on a selfportrait pic B&W from Shane Lavalette from deviantart [link] livejournal and every place i go I found him, hahaha, but not in flesh and bone but in his art, he is so neat, check his web [link]
you can see the pic i based on at [link]
I really like this one, too. I'm not one hundred percent certain about the eyebrow, but the eyes, nose, lips, hair and tilt of the head are all perfect.
you can see the pic i based on at [link]