Thats great. Just remember, fear is not your enemy but your friend. In order to understand fear you have to embrace it and then overcome it. Don't let it consume you but learn from it. Fear is only thing that keeps us all studying or doing any other thing that is important in our life's if we didn't do it.
If one is nervous about something, its totally normal but i suggest once the paper starts one has to stay focused because if you sat there being nervous and the nervous feeling rises, then you'll forget stuff that you studied and you'll start making silly mistakes so, my suggestion is to learn from fear, embrace it then overcome it with concentration.