My friend Caroline recently posted a video on her facebook wall where a woman drew a blind self-portrait. (It's not clear if she's actually blindfolded or not. She says she doesn't look at the paper, uses a white crayon, and then paints over it with watercolor to make it appear.) I decided that would be interesting to try, so I used a face-massage mask:
It seems even in my minds eye, my eyebrows are my most prominent feature. At least they're not up my nose. Give it a try let me know how it works out.