At one point or another, you are probably going to have to speak before others. No matter to whom you have to speak, being a good public speaker can have a massive impact for the better. The following advice will help you speak well in almost any situation.
When speaking in public, make sure that what you have to say is engaging, otherwise you risk boring the crowd. Regardless of what you have to say, it will not go over well if it is boring. Practice your speech on people you know to see how the message you are giving is being received.
Keep a loud and commanding voice throughout to make sure it is memorable – this is doubly important if it is a big room such as a conference venue or meeting room.
Source: https://www.entrepreneurshipsecret.com/public-speaking-techniques-and-strategies-a-checklist/