In the first post, look at your back in the first photo (when you started) and now look at the other photos.
You are holding a LOT of tension in the recent photos, sticking your but out, and leaning forward.
If you sort that out, I find you will have a nicer ride.
Your hands are actually nearly perfect. Look at the line from the bit through the rein to your hands. It's almost straight, which is what you want.. not super high up. So I'd say your hands are probably the best aspect of your riding so far.
I think you have your stirrups too short. The one picture you look "annoyed" is actually a very nice length. Now if you were to start jumping higher up, you'd probably have the stirrups shortened 2 holes max.
Make sure your neck stays over your shoulders, not swanning out. The human head weighs a LOT so if it's jutting out lik that you will be out of balance, which will affect your horse.
Now looking at the updated posting.. beautiful :) Much much better!
"Strength is the ability to use a muscle without tension"