So I should actually be working on my next comic page or the next tarot card...but instead I discovered Photoshop's watercolour brushes and a couple of good digital watercolour tutorials, and...too many hours later ended up with Granny Weatherwax from Terry Pratchett's "Discworld" series. As first experiments go, I don't think this one turned out too badly.
Inspiration taken from Paul Kidby and Tony Diterlizzi.
I'm not exactly sure why I picked Granny Weatherwax for the subject, other than that she presented herself. It occurred to me while painting her that Granny Weatherwax is what you might get if you fused Minerva McGonagall and Severus Snape into one person. It further occurred to me that I'd pay good money to see Lord Voldemort trying to cope with Mistress Weatherwax, who I'm sure wouldn't be having with none of those Death Eaters.
For that matter, I expect it'd be worth a few Galleons to see ANY of the HP cast trying to deal with Archchancellor Ridcully and the Bursar. And the Librarian. I'm sure there's a tremendous fanfiction in there somewhere.