I see it all the time – professionals and amateurs alike. If you’re going to use PowerPoint, please ensure that your slide show is set up in such a way that you do not find yourself walking in front of it while your slides are up. The shadow you throw on the screen is very distracting to the audience, detracts from your presentation, and looks sloppy. The secret is to give yourself a few extra minutes to set the room up properly in advance. The other secret is not to use too many slides. That way, you can move freely around most of the time anyway because you’re only using slides to illustrate key points. And remember this. Slides are for key points, not to replace you. Less is more. I’m not kidding you.