You are riding a million times better. NOW you look like you're riding Dressage :) Lovely lower leg, knees not gripping anymore, elbows bend, hands soft and giving. I love it!
Its hard to tell a huge amount just from those couple of pictures, only one is really clear of your horse, but he looks so much more engaged, there is a connection from the hind legs to your hand now, and the hind legs are swinging through much more freely. He'll start building up his back now, if he keeps working in this frame you'll see that he'll bulk up behind the saddle where there is currently a dip.
Keep up the good work!