The eyes have it

A screenshot of the current illustration I'm working on. I always start with the eyes as they are the most important feature of a person's face.

Although it's tempting to just draw one eye and then flip it round to create the second eye, I don't because the human face is never perfectly symmetrical and small differences in the eyebrows can show different emotions. When the eyes look good, I feel happy that the rest of the illustration will turn out alright  :)