Speeches can be powerful. Think about grabbing your audience's attention with an interesting start. Ask a question, make a bold statement, give some statistics.
Aim to write at least 3 paragraphs - each with a different reason why people should think about what you are saying. Give suggestions for how to make your area better for your children and grandchildren.
When you are giving your speech think about using expression - it makes it interesting to listen to. Pause at times to make people think.