If you study at regular intervals leading up to the test, rather than cramming the night before, you’ll remember things more easily and feel more confident.
Get a good night’s sleep on the two nights leading up to the test. If you’re frazzled or wired, you’re going to have a harder time buckling down and concentrating when it really counts.
Don’t assume that the best way to take an hour-long test is to spend the full hour nose to nose with the test questions. If you lift your head occasionally, look about you, and take a deep breath, you’ll return to the test with a clearer mind. You’ll lose maybe ten seconds of your total test-taking time and will be all the more focused for the other fifty-nine minutes and fifty seconds.