I'm going to go ahead and call this done. As far as my memory serves, this is probably the first, maybe only "finished" piece of personal work I've ever done. All the other work I'd call finished were school projects. I'm glad to say I've found a type of art that I enjoy doing for its own sake (instead of all the technical stuff behind it), and I hope to do lots more of it.
(Also, if you're reading this, feel free to leave comments. Feedback lets me aim my posts more at what you guys want.)