Performing starts with movement and smooth moves on camera that demand some tricks of the trade. When normally graceful people get on-camera, they can turn into zombies or klutzes or puppets left dangling. Why is that? Sometimes it's stage fright, but more often the problem lies in the technical demands of the medium. Technical problems are fixable, as we're about to show you; so let's see how to block subject movement and help performers manage their bodies on camera.