Hi Gina: A great foundation is to first understand ourselves as individuals, then be natural in who we are in our delivery. Yes, we can be enthusiastic, upbeat, and keep the class interesting, but I don't think we need to force something artificial, because usually, students are percetive about their instructors. If they sense you are genuine and sincere, they'll pay attention and give you respect. Something artificial will diminish their trust and may impact how serious they take the teacher. Regards, Barry