Read about popular interviewer questions and devise your answers. Test yourself beforehand with a few test questions.
Ask good questions to demonstrate you are interested and have researched.
Breath in, relax your face muscles, take five minutes to ready yourself before meeting the interviewer.
Create a Google Alert about the employer to keep informed.
Don't brag too much. Being humble is powerful.
Job Hunting Tips:
"Before you begin to apply find information about the potential company. Understand what they do, their competition, and things that they feel are important. An employer won't take notice of your statements if you havent researched their operations."