Here I am, fresh of my first game as referee and I'm happy to say, "Nobody got hurt".
The smartest thing I did before the game was line up a veteran umpire, who is also our chapter rules interpreter, to keep an eye on me. It was reassuring to know that if I suffered from a brain cramp he'd be there to point me in the right direction. I'm also happy to say that the brain cramp never occurred but just his demeanor and positive encouragement helped immensely. The rest of the crew is very solid too so there was little that needed to be addressed during the pregame and most of what was talked about was for my benefit.
The game almost officiated itself and I was happy enough during the coin toss that I remembered to signal that the team that won the toss deferred. There were very few penalties and the winning team was in control from start to finish. It was also extremely windy so the passing attempts were kept to a minimum.
In all it was a very positive experience - one that I hope to repeat sometime soon. Thanks to everyone that offered their support. It was much appreciated.