There are several of us taking turns teaching the Wednesday evening class at present. I've known for weeks that I'd be taking the class last Wednesday.
The weird thing is that I stressed over that. Why?
I've had to take other classes at short notice and it wasn't an issue at all. So why would I worry? Is it just my weird mind or is that a normal thing? Ok, don't answer that. ;-)
Anyway, it wasn't helped by the fact that I got there to find two guys more senior to me as well as a bunch of white belts. But they are my mates, and they were most helpful, but without interfering. So there were jokes and it was all cool. We did some of the basic drills, I showed the cross lapel choke from mount, and how to finish it off from guard if they roll. Then I went over a few general things relating to defending arms and neck when on the bottom, pointed out that it's bad to get flattened and that sort of thing.
Finished off with rolling. Got choked by one of the two stripers, who set it up beautifully! Then had a round with one of the bigger two stripers. Got flattened but got out, regained guard and then raced the clock to choke him before time was called. Had fun!