I'm no expert but I'll just say what I see
First of all, your two point. In most of the pictures t looks like you are just standing up in your stirrups. You don't really need to come out of the saddle technically. You just need to close your hip angle and give a little release with the reins. When you're jumping, the horse should come to you, you shouldn't go to the horse.
You have "penguin feet" as my trainer used to say! Try not to point your toes outwards, aim them at your horses nose. Doing this will keep your leg around the horse more, keeping you more balanced I think.
I can't answer about the saddle. You should get that professionally fitted.
Hope I have helped in some way