Many of us tend to be terrified about presenting and public speaking. It can be a scenario which puts a lot of anxiety as well as pressure on most people. There are several means of combating this presenting and public speaking pressure that will give you some help in your speech or presentation.
The ideal thing that can be done is fully understand your material. Practice your presentation till you're certain that you're able to do this without thinking about it. The reason is that you don't want failing to remember what you need to say being yet another source of anxiety in the scenario that you're already suffering from some.
Rehearse with others first in advance. This can help you feel certain acceptance from others. You'll have some confidence that you're able to do the presentation effectively in front of others. Let them criticize you to help you fix anything. Knowing there are not apparent mistakes could make it easier to relax a bit.
You need to recognize that most of the people will respect you for even trying. Most people don't like speaking in public. Just from being up there, many are going to think highly of your efforts regardless how well or poorly you perform. It is difficult for somebody to be critical of you when it is something they wouldn't like to perform themselves.
In case you mess up, don't feel ashamed, stumble over what you are saying, then stop. The majority of people are not aware of whether you mess up or not. Simply carry on like you don't even notice. Since the crowd doesn't know your presentation, they will not realize the difference. If you stop then allow it to become apparent, you are going to become embarrassed and lose self confidence.
Understand that the more you do presenting and public speaking, the less stressful it is going to turn out to be. You need to practice repeatedly so that you can become more comfortable performing it. While this probably won't seem like a great tip to newer public speakers, over time it does get less difficult to manage the pressure.