Here are two faces that I began working on several years ago. Viewing the bottom photo first, you see that I began by using paper bowls, egg cartons, and colored markers.  I also added commercially made false eyelashes to Face 2. After constructing the faces and coloring them to get a better idea of what I wanted to achieve, I used papier mache on both faces everywhere except the eyes.  The eyes seemed to be fine and I wanted to keep them as they were.  After the papier mache I painted the faces with layers of  acrylic paint.

Face 1 (on top)
Face 2 (on bottom)