I did these very quick sketches of my son Connor while we were waiting at the dentist's office. At first he really didn't want me to draw him, not unusual, but he was a good sport about it! Thanks Connor!
I did it with a ball point pen in a tiny sketchbook (3"x5" ?) I keep in the car all the time. With pen you have to make small placement marks first and light lines, sometimes you have to cover over marks you don't want with heavier lines.
Hope you like them!