>>10993680Speak loudly and clearly. Don't sound like you're unsure about what you say. If you're presenting, stand up straight and keep a confident look. Hands out of your pockets, look at whoever is listening to you in the eye. Be ready to field questions, and anticipate what may be asked of you so you can quickly answer them.
Try your best not to slur words or say "uh", "um", or other filler-type words. Once or twice isn't that bad, but you're doing it every sentence, it becomes obvious and very annoying. Don't half-explain things ans then cut off to explain something else only to return to what you had started explaining. If you need to preface something so that you can explain fully, do that first, not in the middle of an ongoing explanation.
If you get cottonmouth, bring some water. You probably won't lose anything for taking a sip here and there, but you will definitely do worse if you can barely talk.
Other than that, try to stay relaxed while still being professional, dress appropriately (wear a suit or something very formal), and do your best.
