I was planning to make one such a SpeedPaint or entirely by PC, then , at my first try (aborted) I became a little upset at the process and idea.
So, talking with my brother, he gave me a big support to try one as I usually draw my personal pieces, ( using pencils and not inking to catch the "roughness")
I felt very well to do this and that is my try!
I hope you guys like !
Original file : 7505 x 5030 - 600 DPI
Tool: Mechanical Pencil 0.7 2B
Eraser : Mono
Photoshop CS 5