Only you know what you are going to say, and what you mean to say. Tell them what you've told them. Tie the conclusion to the introduction by referring to something said at the commencement of your speech. How to make a point and get people to listen more closely Use inflection in your voice. Pause to make points rest and sink in.
Silence draws attention.
Repeat your point to enhance its importance. It's okay to change your speech after you size up your audience. They may be more interested in one point than in another. Gestures - use hands as well as voice for emphasis. Physically interact with the audience.