You jumped ahead in the first and second photo. Sit and wait for your horse.
Yes, the reins were long and droopy in the first shot, but you did correct it. The 2nd and 3rd pic you have an OK release, but it still does need work. Your hands should move a little bit further up her neck. In the last pic it looks like you are actually resting your hands on your horses neck....so that makes me want to believe you arent quite solid in your seat. I like your upper body position in last pic the best....minus the tiny release. You arent as far over the pommel as you were in the others, your back is nice and flat, heels are down.
The thing that pops out to me is that you need to learn to balance through your legs and core instead of the reins. Contact on the reins is good, but balancing on them is not. You are jumping ahead of your horse, out of your tack- think about staying close to your tack, and letting your horse fill the space instead of you jumping ahead in the saddle. Your horse is very cute and looks very willing to jump! Grids, riding without stirrups, and reinless jumping [on a safe horse] are going to be your best friends.
I got to agree with what everyone else said, the other thing that sticks out for me is the placement of your irons, they're a bit too far back, you want them at the ball of your foot that way in 2-point you have a more flexible ankle, that way it's more shock absorbing on the landings.
It also looks like in the first picture that your foot it turned out in more then a 45 degree angle which is at the most you want it turned out, at least that's what I've always been told.
Thanks for the critique everyone. These photos where taken......two-three months. In those months, my seat, realase and leg postion have improved greatly. I'm still waiting for some recent pictures, but oh well. I've been doing lots of grids and no stirrup work lately too. :) Thanks again for the help!