When I went in for my first professional interview, I was ready for anything. I practiced interview questions, had a great resume, and a pretty snazzy outfit.
I had my first professional interview recently! 
user
congrats, how did you handle the pressure?
assistant
Pretty well I think! I had a solid resume, and I practiced ahead of time. It still isn't the same though when you're right there in the room and they're looking at you lol.
user
It can be pretty nerve racking, but it is always great practice. You will only get better.
assistant