I'm not going to read all the other comments, but I will tell you what I see.
First, I see a horse looking for your contact, and not finding it. The horse is searching for it, seen by the head bobbing. You need to send the horse forward into a constructive and CONSISTENT contact that will help contain the energy that your leg has created.
Your leg and seat create energy and the contact decides where that energy goes, and what it does. You have created some forward, and then let it all escape out of the hands.
Also, you must school an immobile halt. Do not accept the wiggly halt. One problem is that the horse dived onto his forehand at the halt. You must ride the halt in a much more forward manner so that the horse drives into the halt, not dives into it. Make the horse stand longer than normal, when schooling. Minimize the salute. I usually nod my head and, at the same time drop my hand to my thigh (not beyond the thigh). Minimal can be elegant.
Whenever the horse turns or changes bend, they will lose impulsion. The bigger the change, the more impulsion they lose. Your leg and seat has to increase the energy when going through corners, bends etc. If you don't, the horse will lose energy and likely weigh the forehand. Remember, sending the horse forward doesn't help you much without a consistent and constructive contact to contain that forward energy.
I hope what I typed makes sense to you! I really like Cinny and think you two will become a really nice team. Keep up the good work!