Not trying to be mean or anything. :) No one's perfect.
It looks like you're standing in the stirrups instead of sinking your weight into your heels which also leads to your legs swinging and you pinching with your knees and it looks like you're jumping ahead, you need to be more in the center of the saddle. This is just going to make it harder for your horse to jump.
*I'm really bad at explaining xD sorry.