What a great post! I don't think I'd seen any of these fanarts before, and the Unseen University library miniature is amazing! Love the backgrounds/landscapes from both artists, the Cheery sketch, and the movie poster especially. And the more Kidby-esque arts are not exactly my style, but are lots of fun!

I have a question for you: have you ever found good Granny and/or Nanny art? I've found great art of pretty much everyone else out there, between fan and pro, but not a single one that really looks like the Witches to me. But you've clearly delved much more deeply into Discworld art than I have.