Almost, change illustrating with to illustrate. But otherwise it looks right to me.
Answer:
There are two kinds of speakers in the world: those that are speaker-centered and those that are audience-centered. A speaker-centered person thinks only about his perspective and uses his beliefs and values as the focus of the speech. An audience-centered person makes his speech more enjoyable and entertaining.
Explanation:
The best way to know if you are focusing on your audience is to perform a formal analysis, and it's pretty in depth. The speaker makes a prescribed plan to scrutinize the audience's behaviors and uses the data to come up with conclusions about audience's preferences.
