Okay, so here is what I saw:
-Pause at 0.08. Your hands look high, turned in, and your left hand looks like it is coming back to your hip. Like Morgan mentioned, try and keep your hands quiet.
-It looks like you were bumping her with your leg when you come around that turn (after 0.08) but still getting her in the mouth.
-Now that you said you moved your stirrup up a notch, I think your leg will be a bit quieter. It looked likewhen you would rise, your foot would go out in front of you. My suggestion would have been to pick up your stirrup a hole, but you already did that :)
-Your posting looks a bit forced, but I think that is because of the stirrup issue.
I would say go for the show. It can't hurt and I think you would have fun with it.