Been there Bro, just last year i had my first Presentation in class. It is normal i still get it today even tho i have given around 10-15 of em. Sometimes it goes well, sometimes it doesnt. JUST GIVE YOUR BEST. Learn it the best you can and practice infront of mirror or infront of someone at home or friend. AND REMEMBER THIS, WHATEVER HAPPENS YOU WONT LEAVE IT IN THE MIDDLE. YOU WILL COMPLETE YOUR PART. Go on mayn, You are strong, im proud of you. ❤️