Practice.

Well, actually it’s more than that. Before you practice three things have to be in place:

1. Your call to action
2. A clear flow of ideas
3. Props that support (as oppose to *tell* your narrative)

Once these are ready I tend to do two things:

a) Print out the slides
b) Export the presentation as a PDF, add it to my Dropbox and access it on my iPhone

Finally, I practice running through the presentation three times, with one of these being before I go to sleep the night before. As a teacher I learned that it’s the *transitions* you have to work on as it’s easy to ad-lib the content if you know your stuff.