If you are presenting EMS education at a conference please avoid the six following deadly sins.
Reading power point slides to the audience. No presenter should do this. Ever. If I believed in hell I would hope that there is a special place in the hottest part of it for presenters who do this. EMS is taught to the 10th grade level which means we can all read.
Having slides that suck. See figure one for an example. Few things in this world truly offend in the way a presentation that uses comic sans as a default font does. Additionally the use of WordArt should be kept to a minimum. When a presentation has more than a few slides using Microsoft WordArt there are two possibilities; the slides have not been updated since 2003 or the presenter has the kind of bad taste where they think Olive Garden is a really fancy restaurant (1).