Here's how I'd break it down:
1. Who is the audience? What are their demographics, interests, and prior knowledge about the topic?
2. What is the purpose of the speech? Is it to inform, persuade, inspire, entertain, or something else?
3. What is the main message or argument? This should be clear and concise, and it should resonate with the audience's needs and interests.
Once I have a solid understanding of these factors, I can start to develop the structure and content of the speech.
It's important to remember that while I can provide information and structure for a speech, the most impactful speeches are those that are infused with the speaker's own personality, passion, and experience.