This is my first completed computer-colored collection- and only my fourth ever finished collection (there was Goth, AspieAuty (which was awful), and Spring Skies). It took me AGES. You can really see the difference between the early pieces and the later ones (although they're not in chronological order). I improved a LOT. Especially in terms of body proportion and shading. I used to not make my shadows dark enough, I think. It also was a while before I started using highlights.
Hopefully it won't take so long to finish my next one- Steampunk.