I just watched a live stream presentation of Jef Staes. Each time it strikes me how much fun he has on stage. He really wants the audience to understand his message and is enthusiastic to get that message across. I noticed the same thing a few months ago during TEDx Maastricht. When I drive home after such presentations I always ask myself which presentations sticks in my mind. For the ted presentation 2 came to my mind. Not because these were the best presenters as such, but these 2 speakers were the most enthusiastic.So show enthusiasm for your next presentation. High volume voice helps, coming close to your audience helps and telling stories (examples) helps!