I still get nervous after 15 years. I like it. It reminds me I'm human, not a robot and aids my concentration.
Ditto, apart from the 15 years bit. If I wasn't nervous I wouldn't be arsed and wouldn't be at my best for sure. Nerves are good.
I would take a lot of what's said above, but my only other advice is remember the very bare minimum to make the game happen, ie kick off on time, remember to start watch, remember whistles etc, and while have a bash at all the peripheries it doesn't matter if you forget another part of the routine.
I mean if you call the captains in for the toss and suddenly remember you haven't checked the nets or corner flags don't worry about it. Just put it to the back of your mind and focus on the game ahead. Just get through the first game and concentrate on the game itself.
Other than that act confident, even if you're
ing yourself. Confidence breeds confidence, so if you act it you'll start to feel it, believe me it's got me out of some tricky situations!
Finally, as others have said, enjoy it. And don't plan anything other than relaxing afterwards - mentally and physically you'll be whacked.