I saw improvement too. It looked as if you weren't fighting as much with each other.
Your position is better. But you are still too far forward. It takes a while to get the correct feel of where your body needs to be. After seven months of riding 3 to 4 times a week, I still creep forward.
Your hands need to be softer. She is fighting the bouncing of the contact but I noticed at 1:44, for about ten seconds, you had a nice rhythm going. Your hands were very quiet. I'm not sure how much contact you can have with a curb bit. Was there a reason why you switched?
You're getting there! Just keep working.
I agree with Bailey completely. I saw beautiful quiet hands, nice seat, forward horse for about 10 seconds, and then she went back to jerking her head up which made her look like she was bracing in her back and not being very comfortable.
You have gotten better with your posting though! I also agree that your position seems to be off, and I'm guessing it's from the saddle. Make sure it's level when you have weight in it too and that it going to stay where it's at. Sometimes switching the girth type or reflocking (if you can, which means stuffing the saddle with more wool or taking some out to shape it to the horse.)
Can you get a picture or video of your feet completely out of the stirrups, just drooping down, so we can see your position then? It'd help.
Watch those leads at the canter, and make sure you aren't leaning into the circle/middle.. stay with your outside seat bone to keep her from falling in (along with support from your inside leg and rein if necessary.) Same with trotting.. she needs more support which is why she's tipping into the turns and not nice and straight.
I'll keep my mouth shut about the curb except to say I think she needs more direction from your hands as they help to support the shoulder and encourage her to soften, and she's not getting that right now..
Keep on trucking!