Astounding!
I was reading through the 'Art of Blizzard' book in EB games the other day and loved seeing all the original sketched of the races and characters from their games, and how many of them were done with a pencil or pen on the back of a homework assignment or on some graph paper. I think there's something within us artists that finds that kind of thing kinda neat and pelasing, not sure why, but creating something completely different and otherworldly on something as mundane as the back of homework.
Anyhow, my main point is, this piece is fantastic, and it being in biro on paper in no way diminished that, in a way it's almost enhanced by it - its different, purposeful and well presented, great work on optimising it for upload, great contrast and clarity, nice burnt edges, and most of all the drawing itself is just brilliant. Keep up the awesome work, adding this one to my favorites.