How's my riding? How's my horses movement?

You need to develop your seat at the canter. You're very choppy, not quite with the motion. Lots of sitting trot will help you loosen up your hips. Do some hip stretches before you get on, as well.

Your jumping is okay. You're basically just standing up in the stirrups and grounding your hands in the neck. When you're riding a horse that's small for you height-wise, it's difficult to get a good position over these little jumps, but try to think about "crouching" over the saddle and not standing straight up. Move your hands forward a fraction instead of burying them in the mane.

Your mare is really cute. Be very careful when you execute your downward transition from a canter to trot that you do not let her just fall on her forehand like that. She's just ripping the reins from your hand and throwing her head down. I don't mind a horse going like that, but she shouldn't automatically go there. She should wait for you to offer for her to go there.

I would like to see your ask for your flying changes on more of a figure of eight instead of a half-diagonal like that. It will give you a better place to *ask* instead of taking her to the fence and picking a random spot. So, think of it as two large circles, like a snowman, instead of an infinity sign (if that makes sense).

More impulsion at the trot (NOT more speed). Think of it like a stuffed toy. When you're trotting along in the video your mare is floppy. She's behind the leg, and floppy, and has no stuffing. A teddy bear with no stuffing just flops around wherever. So imagine filling your mare with stuffing. Post higher, not faster.

Your canter over fences is okay. I would like to see a more judicious use of half-halts to keep her balanced and encourage her to sit back a little bit instead of tearing around like a bullet. When she starts to get "floppy," just like in the trot, elevate your hand a tad.

But this is a horse I would love to ride. She looks like a lot of fun.

It looks nice. You move well with your horse but it looks as if you need to slow down a bit and collect a little more. Get him to move slower, then start adding some speed. The jumping looks good also.

You look good on him/her! You have a great seat and you're using your aids well, but you could shorten up his stride and just collect him/her a bit more. It's kind of hard to see what your eq looks like, but I don't see you doing anything wrong :)

Good job and your horse is a cutie!