Every GREAT speaker LISTENS to the audience - NOT before, NOT after, but DURING their presentation. Your audience will tell you how to be dynamic, when to change and how to be better.
So often we take our time preparing, we work hard and like what we see on paper and what we hear when we practice. The problem is that the presentation is NOT FOR US. It is for them.
If you will listen to and watch your audience closely while you present, they will tell you if your message is gripping, dynamic and memorable. They will also tell you where you have become boring or just plain blown it in your presentation.
The first thing you must listen for is noise. Rustling, paper shuffling, feet moving around, shifting in chairs... we've all heard it. If that noise starts it means that somewhere along the way you have lost the attention of the audience, you are no longer captivating.
The second thing is to watch the eyes of the audience....