Probably the most inspiring person in this domain, Jean-Luc Doumont delivers many workshops on the topic. Check out his websites for more info: http://principiae.be/ (company website) and about communications on nature.com. Jean-Luc also describes in details how to do nice graphs here.
You can specifically watch the opening and close on this page.
Just so you don’t think I’m the only one doing superman before something important, watch the video of Amy Cuddy.
Finally, here is the handout of the presentation you have seen during the training.