Yay! You're gonna have a blast :) The only advice I have is make sure you're nice and relaxed so your energy doesn't transfer to your horse. If he can be a little spooky with jumps, just stay calm and talk to him so he knows everything's okay. And if he can rush fences, take your time. Since it's unrecognized, you can always stop, circle, backup, etc. Whatever you need to do. My first HT, Roxy and I stopped after practically every jump since she can get really strong.
Mostly, just have fun! And take plenty of pictures for us ;)
Worth The Wait <3