Ceres, Venus, and Juno, to be exact:
They're not meant to be a series, but since I've made more than two now I suppose they technically are. I did them mostly as a lark (okay, as procrastination!) and they really are very small, just an inch and a half square. They're pen and ink with watercolor, and are meant to look sort of like Art Deco woodcuts. Not sure if I quite got the effect I was after, but I do rather like them.