Practice makes perfect

Practice is KEY. Even if you don't have a presentation to work on, you can still improve and perfect your skills by volunteering your services to a civic group of your choice. Doing this will allow you to break out of your shell if you are shy, or will simply allow you to improve your skills more. There are many groups and agencies that need people to speak for their cause. By volunteering some of your time for these kind of tasks, you would be able to help the community while you are practicing on your presentation skills.