Albert Einstein -Graphite Portrait

So this was primarily a test on hair and face texture, I think I did decently well. The eyes and moustache were the hardest parts, I had to redo them many times.

Tools: 4h-6b Pencils, drafting pencil, eraser stick, 7 by 11 bristol board.
Time: 6hr

thank you all for the feedback

Check out my other pencil/pen drawings:
facebook.com/jeffzhaospage
inhibitus.deviantart.com