You need to do research before the interview. First check the company's website read recent news about the company. Second think carefully about what questions you will be asked prepare positive answers in advance. Third be clear about what strengths skills and qualities try to present a positive version of yourself. Fourth dress appropriately try to relax maintain eye contact and be friendly and enthusiastic.
Fifth Remember that a good question will show that you have done your research and have thought carefully about the requirements of the job