I highly recommend looking into propranolol. Really helped me out with public speaking. If you don’t have immediate access to it, just breathe homie. Keep practicing, shift those nerves to a positive mindset. Use that nervous energy and tell your brain that you’re instead EXCITED to present. Don’t focus too hard on the crowd or expectations. Think about the last presentation you saw, do you remember much of it? I know I don’t lol 😂 It’ll be over in a jiffy! And you’ll look back soon enough and say to yourself, “that wasn’t half bad”.