Fellow speaker,
You can put your audience in the scene by describing your story's characters through people in your audience. For example, you could say, "Bob looked a lot like Jim here [gesturing to Jim in the audience] only a little rougher looking." This will give people a visual of what your character looks like.
In the audience,
Tim Wilson
Professional Speech Coach
Free speaking tips at: speakingquicktips.blogspot.com/
