Speaking in public is a skill that can be developed.
However, let’s say you haven’t taken the time to develop that skill and yet you MUST speak in public suddenly.
I have some advice based on experience and what my high school English teacher taught me.
She said that the most powerful speeches are those that come from the heart. In other words, if you are passionate about something, then just speak plainly and from the heart. One heart to many. You have something to say, so say it. If you are not a polished public speaker, this really works.
On the other hand, if you have more time and you are not facing a situation where you must develop a speech quickly, this book might be helpful to you.
It’s called. Speak With Confidence: A Practical Guide.