If you can make a request for it, be sure to ask the interviewer if you can be either the last person to be interviewed or the first person. The person in the middle will be least likely to be remembered. It's because of the primacy effect and the recency effect. The primacy effect is because you have a lot more room in your memory to store info. The recency effect is because, well, it's recent.
How old are you and is this your first time job? If not be yourself and answer the questions truthfully and sit up straight and ask questions to the person interviewing you. You also might want to research the company before the interview to get to know something about the company.