I would say, just relax. It's most important that you feel comfortable behind the wheel. Listen to something good on the way there to put you at ease. Also, just make sure that you check your mirrors and just stay alert.
When I took my test, I believe most of the points were taken off because I was going to slow because I got nervous and overly cautious. I say, most importantly remember that you most likely have plenty of practice and know what to do.
Good luck!
