Exude Confidence & Positivity
Confidence can be exemplified in your attire, posture and voice. So make sure that you stay confident throughout the interview because a company doesn't want to hire someone who can't get it together.
Stay positive! Believe it or not positivity can go a long way and a positive attitude can be a driving force in a work environment. No one wants to work with someone who is pessimistic and doesn't work well with a team. Remember the interviewers are looking at your qualifications and want to make sure you're the right fit for their team.