Practice Good Nonverbal Communication - It's about demonstrating confidence: standing straight, making eye contact, and connecting with a firm handshake. That first nonverbal impression can be a great beginning—or quick ending—to your interview.
Dress for the Job or Company - Today's casual dress codes do not give you permission to dress as "they" do when you interview. It is important to know what to wear to an interview and to be well-groomed.
Listen - Good communication skills include listening and letting the person know you heard what was said. Observe your interviewer, and match that style and pace.
Don't Talk Too Much - Telling the interviewer more than he needs to know could be a fatal mistake. When you have not prepared ahead of time, you may ramble when answering interview questions
Don't Be Too Familiar - The interview is a professional meeting to talk about business. This is not about making a new friend. Your level of familiarity should mimic the interviewer's demeanor. .
Don't Be Cocky - Attitude plays a key role in your interview success. All the interview tips in the world won't save you if you come off as unpleasant to work with.
Take Care to Answer the Questions - When interviewers ask for an example of a time when you did something, they are asking behavioral interview questions, which are designed to elicit a sample of your past behavior.
Ask Questions - Asking questions also gives you the opportunity to find out if this is the right place for you. The best questions come from listening to what you're asked during the interview and asking for additional information.
Don't Appear Desperate - When you interview with the "please, please hire me" approach, you appear desperate and less confident. Reflect on the three Cs during the interview: cool, calm, and confident.
Work on Your Answers - You know you can do the job; make sure the interviewer believes you can, too. One way to do this is by preparing well-thought-out answers to questions they're most likely to ask.