Remember to get a good night's sleep.
Wake up and do some stretches, getting ready to start your day with a good attitude.
EAT BREAKFAST. (A good, healthy breakfast, of course.)
Take a look at your notes, this site, or any others that may help you, on Sunday evening so you can feel prepared.
Don't be scared or nervous.
Just do your best, because that is all you can do. Give it 100%, and be happy.