Your flatting pictures look SO much better! Congrats!
Remember to keep your leg below your body, and let the horse close your hip angle. In the past photo, the whole thing seems.. off. It looks like your horse jumped you so far ahead of the motion, you seem to be in good position, but about 5-7 inches ahead of where you should be - or am I just crazy? Keep working on a nice flat back too :)
I think you need to let the horse close your hip angle- it looks like you are ducking too close to your horse's neck, especially in the first jumping picture. Also, on the flat and over jumps, try to tough your shoulder blades together and sit up tall because it looks like you are slumping over. I am really envious of your leg positioning!
You guys look good! For he jumping pictures, lower your hands about two inches for a textbook crest release :) that way it serves its purpose of providing support for you without getting in the horses way (not saying you're in your horse's way in these pictures, it's just a trend that has started of having a too high crest release)