Fellow speaker,
World Champion Craig Valentine suggests you work to make your message as "universal" as possible. The more people that can relate to your message, the more people you can give that message (and that speech) to. Keeping your speaking message so it can apply to many different people means you are ready to present to many different audiences.
Universally,
Tim Wilson
Professional Speech Coach
Free speaking tips at: http://speakingquicktips.blogspot.com