When I was in high school, I received a letter of acceptance into an orchestra. At the bottom of the letter, there was a short critique of my blind audition. Although I received praise for my intonation and rhythm, the critique also said, "Try not to be nervous. (Easier said than done, I know...)"
I appreciated the parenthetical show of understanding, but advising someone not to be nervous is as pointless as telling someone to "just get over it." If you're nervous, you're nervous, and being told to stop won't change that.
