Job interviews are always stressful - even for job seekers who have gone on countless interviews. The best way to reduce the stress is to be prepared. Take the time to review the common interview questions you will most likely be asked. Also review sample answers to the typical interview questions. It's not enough just to have a perfect resume that communicates who you are and what kind of employee you could be to a potential employer.
That's just the beginning of the process. A great resume will set you apart from other candidates and get you selected for an opportunity to interview for that position. Once you receive that call as an invitation for the interview, the rest is up to you.