first of all you look amazing! so, i will first tell you things you can work on, and then things you look amazing at.
(just to let you know i didnt read the other critiques yet, so im sorry if im repeating what their saying)
so, in some of the pictures it kind of looks like your turtling your back, kind of like bending it try to bend from your hips and push your chestforward,and butt back, so Your flattening your back, but that is in only some pictures. and im sorr to hear about your injuries, and i know you may not be able to do it, just saying try to push your leg toward his shoulder a bit more, and put heels pointing out a bit more. and also you may need to drop your stirrups a bit! ( they look a bit short) also just one more thing your kind of ahead of your saddle a bit, just try to not go over the saddle pommel too much :)
and on the bay pony,looks awesome just sometimes i think the pony goes a bit more long then he/she needs to.
****just so i dont get eaten by any other critiquers im not an expert just my opinions***
and now, for good things.
the bay pony has excellent knees! they are always perfectly together, and level with eachother!
you are also very good at not looking down, you are always either looking through the ears ahead of you, or looking where you are going, you also have an amazing form! you are truly amazing in these pictures, just trying to look for everything and anything, :P you look amazing! and so does your horse! :)