(I think (I think) that one of the reasons they flap is because I sort of move my hands to follow the horse's head), but my reins are loose enough that I don't have to do this, so I think next lesson I am going to try to keep my arms/hands as still as possible). That would probably help but I would like some opinions. Also my position isn't always very pretty. I feel very secure and my butt stays rather well on the saddle (if we exclude the beginning of canter and the rare irregularity), but my upper position is just... well watching the video will say everything.
I think I might have to pull my chest/belly button more upward and curve my back a little. But then again, I'm not sure so please tell me what you think!
If you notice something else don't be shy to say it. I don't mind very honest critiques.