Don't forget your body language like making eye contact, your posture, not fidgeting and not mumbling.
Do not merely read through your CV. An interview is an opportunity to deliver all of the skills you have that your CV can not communicate.
Do not be worried to say you don't know a response to questions.
Say thank you to your interviewer at the end and after by email or send a 'thank you' letter by post.
Stipulate the goals of your career and the reasons you prefer the position.
Be genuine, optimistic, focused, confident, frank and to the point.
Advice for Job-hunters:
"Prepare job search arsenal and craft job-gaining skillfulness. Once your selected career choices are picked, a CV and application letters can be tweaked to display your abilities so they match the interests of potential employers."