If you ever need anymore help, I've been jumping for 21 years, now I compete and judge jumping, so please, if you need critique, here is mine:
Maura, you are very wise, for I agree on most all of what she said, as a judge, I'm nit picky and just have a few more details.
When in a competition, put your hair up into your helemt, so it's not slapping your back. You will look more put together and professional in the ring. Your clothing is perfect, and matches your horse, big bonus points in the ring!!
I agree that work without stirrups. You should never rely on your stirrups to hold your leg in, you should rely on your knees being closed on the saddle, and your grip throughout your leg. Your grip on your knee should contribute to your knee being closed on the saddle. That is what most of my showers and students get marked down on.
You are flying tremendously more out of the saddle then nessacary, and this will cause you problems later. You are arching your back a bit, remember, jumpers are jumpers, not jockeys. Try putting a crop on your back and jumping. It will hurt if your back is arched, if your back is flat, you won't feel it. I use this with all my students who like to watch racing more then jumping, and they get over the arch within a day. It's a great help, and even I used it.
You have an amazing pace, and your horse trusts you, if you were in one of my classes, you would have passed with flying colors. You and your horse have a bond, which can boot up your scores. You do need to work on those bends however. Remember to use your full arena. Once you get into higher jumps, and you need to hand gallop, using your arena will be your best friend. Cutting your corners will get you a sloppy ride.
Overall, your ride looks amazing, you should be very proud of yourself. :)
After 21 Years of horses, you'd think I'd be bored
Well let me tell you, working with horses?
I'm Never Bored