The first step is to learn about communication techniques. Take a course in public speaking or sign up for a workshop from an experienced speaker. Once you have a good understanding of the basics, it will be easier to apply these techniques to your own speeches.
Another important step is to practice your speeches frequently. This not only helps you develop confidence, but also enables you to respond effectively to feedback. As you get better, you can incorporate more personal stories and anecdotes into your speeches to make them more interesting and engaging.