Here are a few of mine from two to one year ago.
The first one is a line art I did on paper, scanned, and CGed.
The second one is a portrait of my 12th grade english teacher.
The third one is a portrait of my 12th grade economics teacher.
The fourth one is drawn from a still life of a crushed mountain dew can.
The fifth I drew from a 4 by 6" picture of Uno pizzeria in Chicago.