I would never have guessed she was in a rope halter. Not the best video. Next time maybe get close, and don't use all of arena, or just sacrifice some of it when you leave the field of view.
So, the head flipping is pretty much an expression of opinion seperate from any particular action on your part. Hm m m . She isn't real bad about it, so can't really blame her. While you are working low key, maybe just ignoring it is good enough for now. She did walk well and did a lot of things that you asked without much fuss. In the words of MY trainer, "I'll take that!"
In fact, that's a nice saying that I have adopted from her. She askes the horse for something, and when she sees the "try" , she stops asking and says, "I'll take that!". I find myself saying it too.
She also, and I love this, says, outloud, "Thank you!" when the horse finally does something that you had to ask for for along time. Like , say your horse won't give to the bit, and you are putting on some pressure, now holding that pressure and waiting, your horse struggles and looks for an easy way out, and finally gives to the bit. You say , outloud, "thank you". It helps to remind you to give big releases. I feel like not only do I give a physical release to the horse, I find myself kind of expelling some held onto tension, in a sigh and a release of my shoulders which I have been holding up tight against my neck.
There's just something about SAYING thank you that makes it complete.
Thank YOU for the compliments. It would be fun to ride toghether, but we shall have to manage withe what is in reach.