Ify, probably just best to do it a lot but I have the same thing with presentations and things for audiences xD
How to overcome stage fear and palpitations

Um the best u can do sometimes is ignore the crowd part ...like ignore all the people in the room n go with the flow. I mean speak on as u were speaking during practice sessions.
Or the second thing u can do is literally do nothing n try to be normal but don't go in overconfidence or with low confidence
Hope this helps out cuz it worked for me so yea.
bro today I was representing my school in the MUN (model United Nations) in UNHRC and in stage fear i forgot how to hold the paper it took me like 10 seconds to figure it out
I had done so well in the mocks
I have another performance on 9 and 10 nov pls help me