Overall, I'd say you're on a good path!
Some points:
Your movement still looks a little too static, remember this is an explosive ballistic. Especially at the top, it looks like you are trying to raise the bell artificially. Don't worry too much about hight, it will come naturally. Generally: somewhere between navel and chin is the right hight. Let the bell float briefly at the top to the point where it is motionless for a tiny second (don't worry about "freezing", yet). Once the bell has reached that point forcefully and aggressiveley reverse the movement and only hinge back a tiny second before your forearms make contact with the upper part of your inner tight. Sit back deeply in the hinge and then again forcefully reverse the move and let the bell float at the highest point.
When you hinge back make sure it is in synch with your arms guiding the bell. Right now it looks like you are hinging back a bitt too early which causes the bell to float toward your butt. This is not supposed to happen. The bell only float at the highest point.
Also exhale sharply as you propell the bell up with your hips, that means the exhale is not quite at the top but a bit earlier. Onhale on the way down. Remember: at the highest point you are basically a standing plank. Abs tight, heels forcefully pressed into the ground and glutes contracted. Thing about using your glutes as a "break" to prevent back hyperextension.