Rambling occurs when your eye contact moves rapidly from person to person. To avoid this: shift eye contact only at the end of a sentence. Finish your sentence with one person in the audience.
If you lose your spot or train of thought…remember it is not about perfection. Don’t apologize. Don’t stare at the audience. Pause, look down for a moment, regain your thoughts and resume your presentation. Your audience will assume you had a great thought.