Practice your presentation skills all the time or leave it completely

In some cases using no additional aids at all is just fine, it all depends on what you're trying to accomplish. The tone of your presentation may be more or less formal depending on the context. If you know everyone in the audience such as a work meeting of coworkers, that's very different from if you're making a presentation to a group of people you've never met before. The beginner public speaker may need to deal with stage fright. Presentation skills boil down to using various techniques that are very easy to learn. With a little practice, anyone can become a polished presenter.