Yeah, I'm planning on smoothing out the lines a bit, and I might try adding shading at some point. As for the cat-like proportions, I totally cheated there and did a little tracing. Should've mentioned that in the original post.

Whenever I do another, I'm going to do it completely from scratch (although I might use a reference image). Right now I'm just getting a feel for how to use my laptop's mouse pad to draw.