Leave plenty of time for studying. Make sure you know general concepts rather than simply memorizing a number of facts. Try to apply what you have learned. Good study techniques always involves writing. Be willing to re-write your notes in outline form and to originate information on a blank sheet of paper.
Many tests ask for recall of information as opposed to simple recognition.
Effectively Get a good night's sleep before the exam. Make sure you get to class on time. Make sure to bring a watch with you. Don't drink too much coffee or caffeine drinks before the test. They might increase your anxiety.