You looked pretty good for the most part...
Your hands and legs are a little more active than I'd like, I would work toward lighter cueing though, teach your horse to respond quicker to lighter pressure.
You look tense, which does transfer to your horse; take some time to relax, or learn some relaxation techniques for before, during and after a show. The more you can relax, the more you'll be able to get out of your horse. I think he might have extended out more if you would have let him out a bit more. As you get more ring time, I think, the more you learn how to relax, you just gotta work at it bit by bit.
"The ideal horseman has the courage of a lion, the patience of a saint, and the hands of a woman..."