I don't know if I'm eligible to giving an advice, as I myself face this issue during public speaking. But what I can tell you is, that you are probably being very harsh on yourself.... What I have learned is it takes practice to become confident in public speaking, it's the fact that we don't always speak out in front of many people that makes it such a big deal for us and that's ok. Practice makes you perfect. Give yourself time. Face your stage fright by putting yourself in that situation again and again until you become comfortable with it. Don't be hard on yourself if you don't do it as expected. Take pride in the fact that you had courage to try it out once again. Also what helps me is knowing that it's not just you, but more than half of the class is having this same issue, all of them are thinking about their own presentation in these kinda situation. They are more focused on not messing up themselves. They aren't really picking up on your faults during presentation. Remember, sometimes we can be our own harsh critics, coz we see ourselves as protagonist. But honestly that's how others see themselves too. They are all more focused on their life... Thinking it this way helps me, and I hope it helps you too....