Stress relief noodling.
In truth, I drew the line-art quite a while ago and was planning on making a paper-craft of it (a la Brittany Lee). I wanted to do that as a birthday gift for someone, but said friend stopped talking to me around that time (it’s all good now, no worries. :p) so I just let it go unfinished.
I had fun doing this, even if I’m not happy with it. ^__^;;