It's quite interesting being so focused on a person so intensely for 3 hrs, in so many poses.
I was stretching a bit during breaks (20 mins drawing, 10 min breaks) and found myself looking at more nude figures in the wood grain of the floorboards without thinking about it.
Kind of like seeing shapes in clouds. Its seems to happen more when you are not really paying any attention to what you are looking at, and your mind is elsewhere.
Anyhow, my goal for future drawings I think is to try and get some cursory shading in along with a decisively drawn contour line drawing, if I can.
Here's my favorite 9 out of the 50 or so I drew (I'm not showing the real stinkers!)...