I didn't do any koshi-nages in the end. I was never fond of them, and after messing them up in the warmups, there was no way I was going to go for it and get pancaked in the grading. I had some nice kokyu throws though.
Congats on the Nidan with Yuishinkai.
Luckily you sensei wasn't like mine, who follows the Yuishinkai grading guidelines then adds what she'd like to see. I think she decided that she hadn't seen enough koshi's and asked for a minute or two of just koshi nage to various attacks
Hope you enjoyed your video, I'm always surprised they don't look as messy as you think it felt on the day