You know you've arrived as a DM when you can freak your players out over the most innocent of things. It's all a matter of presentation. Like today's motivator. I even went so far as to draw lines on the picture to assure myself there weren't any overlaps. It helps, but if you don't have lines to guide you, it can mess with your eyes significantly. With players in this medium you need to mess with their imaginations more than their eyes.