Plan ahead for the exam and systematically prepare for it. When you sit for the EA exam, give them your best. Neither you or anyone else can expect more. If you have undertaken a systematic preparation program, you will do well.
Maintain a positive attitude, and do not become stressed if you encounter difficulties before or during the test. An optimist will usually perform better than an equally well-prepared pessimist. Remember, you are not in a position to be objective about your score results; many well-prepared candidates have been pleasantly surprised by their performance. You should be confident in the effort that you have put into your studies, and in knowing that you are competing against many less-prepared candidates. Fear tends to impair performance; optimism and a fighting spirit, on the other hand, are always worth points on every exam!