You have a nice upper body in the first picture, your hands are resting really nicely on the horse neck. Also I think your foot isnt turned out too much. It should be turned out at a 45 degree angle. Your leg is a little too far back, and your horse is jumping too flat..it kind of looks like he is hitting the wall with his front foot, that's a consequence of being too flat.
The second picture your horse looks a little better, but he needs to round his neck more, and jump more from behind. The reason it looks like your horse is reaching is because you are jumping too far ahead. Your heals need to come down more, and your stirrups need to come up a hole or two.
I have the same problem with my legs sliding back. You need to keep leg on him at all times and sit and wait for the jump to come to you, and just let the horse throw you up into the two point. It takes some practice.
I like how your eyes are up in both pictures and your back is nice and flat. And im very happy you arent laying on his neck.