I am making progress. About a quarter of the way through my first editing pass. I'm going to be slowed down when I get to the sections I know will need major revision.
I am starting to think about artwork, too. As you know, I created illustrations for each chapter in my previous books, using Poser and Photoshop. Looking back at these, while some were rather charming, it's a bit embarrassing how bad my graphic arts skills are. I think I have neither time nor inclination to do that again, so I'll probably commission a few illustrations instead.