Confidence: Good preparation always creates confidence. So the important thing to an interview is to be well prepared. In this you have to consider two things:

* You must prepare yourself practically for the interview.
* You have to gather information which is useful during the interview

Be on time:Try to be on time,puctuality is the key to success.

Listen carefully:Most of the candidates are so nervous ansewring the questions correctly that they forget to listen what the interviewer is asking so listen carefully,don't interrupet , give eye contact.
Don't takl too much
Don't give a poor hand shake.