If you want to become a good speaker, you have to be a good listener first. So, you should attend speeches of influential speakers or you can see their videos in order to take inspiration from them. You must keep in mind that you should not copy them. But, you can learn to make your own style of public speaking by taking notes from their speeches (where they emphasise on things, where they change their tone, what is their flow and how they use humour).
To become a good speaker, you need to have a good speech. In order to write a good speech, you have to make an outline first. In the outline, you have to mention the start, middle and end of your speech. You can just write the main points with little description of the whole speech in the outline. Outline will help you in time management which is crucial to deliver an influential speech.
It will be good if you make a visual presentation of your speech in which you can add various images to make it more interactive. You should not use any unrelated images because it is very important for you to keep the focus and attention alive during the speech.
Before starting a speech, you must take a good look at the audience and should develop good contact with them. You should look into the eyes of as much people as you can, with confidence, before starting your speech. But, you must keep in mind that you don’t have to be too aggressive with your looks because it will scare the audience.
You must know your audience. It means that you should be well aware of their liking and disliking, customs, culture and traditions which will help you to become more interactive with them.