Controlling the Environment
While much of the outside environment is beyond your control, there are still some things you can do to reduce potential risks to your presentation.
Members of the audience want you to respect their time. If you end your presentation on time or early, this can make a huge, positive impression on them. When speakers go over their allowed time, they may disrupt the whole schedule of the event and/or cause the audience unnecessary inconvenience. Be considerate, and stick to your agenda as closely as possible.