Large drawings take me forever to do, and I tend to make a mess of things. Especially when the paper I'm using is crap. This was about 20 hours of work, and a real pain in the arse. Not the best way to ring in the new year. lol
I used a variety of graphite pencils and some black and white charcoal as well. Also plenty of blending stumps and tissues.
11x17 on gray paper.
EDIT: I messed around with it in Photoshop a little bit to make the scan resemble the original a bit more.