The first impression
The first impression counts. Give everyone in the room a firm handshake, look them in the eye and introduce yourself. A nice, charismatic smile will always work in your favor.
Keep up the eye contact throughout the interview. You have nothing to hide. It shows self-confidence and high self-esteem. Both sides will profit from you working there, hence, there is no reason for you to be scared or nervous. Keep a straight back, look them in the eyes and show them what you have to offer.
Be honest. Be yourself. Honesty always wins. This remains true in all areas of life, also in interviews. Honesty is the key to success. Do not pressure yourself to fit their position or expectations. If you are not the right person for their team and their company, you are better off in another one. Also, you will feel much more confident and at ease when you are yourself and can thus make a much better impression.
Prepare questions and ask them. Think about what is important for you in a company, your job, or maybe your team. Asking questions will show that you have done your research and that you are ready to face a new challenge. It will raise your value in their eyes. Don ́t forget that you are also an asset to them and the company needs to be suitable for you as well. So be ready to dig into the topics that are important to you and see if the company is the right company for you.
Good luck!