Actually, two of these are from last week. About a month or so ago, in a typical session, I was happy with a lot of my drawings. I thought that maybe I'd cracked it and was now good at art. In the past few weeks, though, I've slipped right back and now I only produce a couple of good things a week.
On this next one, I was a bit desperate after failing to come up with anything worthwhile all session. So I did the drawing without looking at the paper and then shaded it in as if I'd meant it to be that way. It's a nice way to loosen up, and I think it lead to the last drawing.