Choose a famous person and write about his/her persuasive style.
Some questions that might be interesting to look for:
What makes this person persuasive
What persuasive tactics does this person mainly rely on to influence others?
How does recognizing or using nonverbal behavior influence their effectiveness?
Are there some situations that their persuasive style is more important than others?
Who did this person learn their persuasive style from?
Are there some people that this person is not good at persuading? What does he/she do when this occurs?
What does this person consider ethical boundaries in how he/she uses their influence?