How can i control my anxiety?

Just simply build your confidence by knowing what you are going to say or present. Practice, and more practice. You can get over it as time passes by, don't worry!

Knowing that you are not the only one who has ever gone through this will help. Even professional actors get nervous. I have done some community theater so I can relate. I would usually try to take a few minutes before going to the theater to relax, breathe deep and imagine that I am in the middle of the play. I always found that the first couple of minutes were the most nervewracking, then as I got more into the play the easier it went. Even when one of the actors forgot 3 pages of dialog and I had to enter and try to recapture what was forgotten. Hang in there.