Public speaking is an art. As someone who provides multiple speeches every year, I have a chance to see many of other speakers.
Inevitably, I see the same thing. Like this article in Forbes, the same mistakes are made over and over. You can see the coaching that someone has been told, and the little things that a speech coach did to quell the speaker's normal responses: they walk in a straight line from one side of the stage to another, they try to have flashy graphics, and they start with a joke of some sort (which often does not work as well as planned.)
From my work as a professional Actor - we train to engage an audience. We practice bringing a personal connection, carrying the rhythm and tone, changing the speed to make emphasis.These are all part of the tools of our trade. And it takes years to master - one ToastMaster class is not going to make you a dynamic speaker overnight.
As with all practices, it takes perseverance, training and practice. And it shows when someone has spent the time, and invested in their presentation. It makes us, as listeners, feel respected.
So next time you have a big speech coming up - consider it this way: You are a world famous actor, and these are your lines. You might win an Oscar/ Tony for this role, so you want to prepare for every possible scenario, and stay on message. And most important, you want to be willing to improvise based on unforeseen changes in the situation and make it all seem like it was planned.
So be prepared for your next presentation. Take an acting class.