Actor Joseph Gordon-Levitt
A3 - paper, pencil, charcoal, white marker (for smallest details), rubber and toilet paper (instead of stompf - don't know if it's called that in english? If not, it's one of these: [link]
I know the neck is a bit high but when I realized that it was already to late. Mostly because i was lazy since I had not finished anything in a while!
The reference photo is taken by a mr Matt Carr, and is from the Getty Images Entertainment collection, I believe.