If your own mind is muddled,..

“If your own mind is muddled, much more will the minds of your hearers be confused.”
- Dale Carnegie
The effective speaker should have a clearly organized and purposeful presentation. Here is the basic structure of a successful presentation:
Opening - Favorably attract immediate interest from the audience.
Message - Clearly state your message or theme.
Evidence - Establish credibility and inspire respect and confidence by using convincing evidence.
Closing - Leave the audience with a favorable, memorable impression.