Choose a topic that is important to you. Avoid topics that are commonly used in persuasive speeches, offensive or not controversial.
Decide what you want to accomplish with your speech. A good method is to focus on smaller details that you might be able to change someone's mind about. They're not likely to change their opinion on something major with only a short speech as persuasion.
Provide accurate information regarding the other side of the topic. Don't mislead readers as a way of making your argument look better.
Use examples that your reader can relate to. Include topics that are currently in the news and include specific news stories that occurred in your city/state that readers would be familiar with.
Refrain from insulting people who disagree with you. Don't say things like, "People who are against this are ignorant."
Write in a way, and to a topic, that appeals to your audience. For example, if you're writing on small businesses being closed, an elderly audience isn't likely to care about the dance club being shut down. Mention a business that they would care about.
Write an introduction that includes background information. Make it interesting so someone would want to read more. Include the subject of your speech and your view on the topic.
Include multiple paragraphs in the body, with each paragraph discussing one of the specific points that you are making. Use clear and concise language to get your points across and support your point of view.
Include a paragraph which explains the opposing view. Use the tips above, being sure not to insult anyone or convey their view in an inaccurate way.
Conclude your speech by stating your initial view and the points that back up your view.