Write a speech that addresses the concerns of your peers and the duties of your office. Explain how you will operate as a leader and what issues you plan to focus your energy. Use humor in your speech. Include funny (school-appropriate) lines from popular movies or TV shows. Make appropriate, lighthearted jokes about the school, cafeteria, principal or a popular teacher. Make jokes about yourself. Practice the jokes with your friends and family to make sure your material is relevant, funny and delivered well.
Read your speech to friends and family, and ask for ways to improve it. Ask a teacher to review it. Ask for guidance from the election coordinator about the acceptable length of your speech. Practice reading it, and attempt to memorize most of it so that you can look out on the audience and not just at the paper when giving it.