Who can help me to calm my nervous

Our last lecture was at the Bilik tayangan,ptsl.We all have to perform our drama.I really enjoy with they performs.Some of them really have some talents to be an artis.They soooo.... profesoner. For me,I really got no talents.Every time when i stand in front the people.I feel so fear and nervous even though this is not my first time of perform.This all make me very uncomfortable and always forget about the diolog.Can you all tell me how to calm my fear.How to comfortable myself during the perform. I really want to learn.As I know perform and presentation is one part of our life in the campus.We always have to stand in front and present.