I don't know this guy
As part of our previous class, the teacher taught us the basic topography of the human face – the usual bits about the eyes being halfway down the head and measuring things in relation to eyeballs and all that. She just had us start sketching without any particular subject in mind. I was curious in seeing who the face I was sketching actually turned out to be. I can honestly say that I don’t know this guy.
I think the most important bits I took away from this practice was the inner contour of the ear and the lower contour of the nose.