Also, you might notice that the whole thing looks slightly stretched, vertically. It's because I was seated back in my chair as I drew it, so I was looking at the paper from an angle as I drew. When I finally moved to a position where I was looking directly down at the drawing (too late to start over, of course), I realized it was a little funhouse-mirrored. This happens to me way too often.
Ink in sketchbook; tinted in Photoshop