I am from Lithuania, and I am riding for almost a year. I started jumping not so long ago.
When I had found this forum, I thought I also need some critique ;D
So, go on, here are some photos, from oldest to the newest...
What I really have to say is that I don't think you should be jumping the height you are, after only riding for a year, you can definitely tell your position isn't stable enough to support yourself over such big fences. Sometimes your legs are hanging down way too low, sometimes they're stretched way back behind you, you're jumping ahead in many of the pictures, but in others you're hardly coming up into two point. If I was you I'd go back to smaller fences and working on your two point.
Unfortunately, I have to agree that those fences are too high for your experience and training right now. In a few of the pictures, the horse does not look balanced. In most of the pictures, your leg is not steady and you are over jumping pretty badly. You are also not giving much of a release. I would recommend going back down to smaller fences and working on your flat and two point. Work on staying with your horse over the fence and not trying to jump for him/her. Work on bending at your hips over the fence and not launching forward by standing in your stirrups. You appear to be a good rider, so working on these few things will definitely help you progress.
That is the tiniest indoor school i've ever seen haha! I thought ours was small! All I can say is that you obviously have confidence to jump bareback, but i'd say on your video maybe you're "motorbiking" around the turns a little? Maybe slow your horse down, collect the canter (impulsion, not speed) and keep your hands down on landing. Try working on your position and your seat to get better balance when you're jumping.
You need to back off the jumping and work on your flatwork for both you and youhorse. Work without stirrups, teach that horse to be completely reliant on your seat and legs, and transitions, transitions, transitions. Your pony is a cute jumper, but she is not at the level of training she needs to be to be jumping that high, and neither are you. Work on the flat, trot poles, and work on your two-point on the flat. With more work on the ground, you two could be a great team over fences. Good luck!