a bit sketchy

I was going through some of my old sketch books and my work from an art class. There are only three faces that I found. All the rest of the sketches are missing just the faces. Occasionally I left out the hands too, but usually they are drawn in very strategically. The faces are just obviously missing. The three that I did attempt to sketch are a) required for the class project to be considered complete, and b) one time I was feeling overly ambitious. At first I was thinking there was a link between myself being faceless in my dreams and the sketches (one of my BFF's probably doing the same thing and bringing a lot more educational information on the topic to the table)... Then I realized, maybe it's really the simple answer that's the right one. Faces are hard to draw.