I remember doing this sketch on a post-it about ten years ago while I was on the phone at my grandmother's house. Around 2002 I scanned the rough, blew it up, worked over it and tightened it up. The big version was done on Letraset marker paper with a brown col-erase (my favorite pencil of all time) and a lead holder with 3H lead. I like harder leads because they don't smear nearly as much and I like the fact that the light lead gives a lot of freedom with your pressure versus light/dark lines. I press pretty hard anyway and harder lead doesn't break nearly as often and keeps a sharper point.
So this sketch has sat in my portfolio since 2002. He has gotten so much positive feedback that I have toyed with the idea on finishing him up, full color. I'm usually hesitant on going back and working on older stuff but I think he deserves some more love.