make the talk your own. You know what’s distinctive about you and your idea. Play to your strengths and give a talk that is truly authentic to you.

So limit the scope of your talk to that which can be explained, and brought to life with examples, in the available time. Much of the early feedback we give aims to correct the impulse to sweep too broadly. Instead, go deeper. Give more detail. Don’t tell us about your entire field of study—tell us about your unique contribution.

Find five or six friendly-looking people in different parts of the audience and look them in the eye as you speak. Think of them as friends you haven’t seen in a year, whom you’re bringing up to date on your work. That eye contact is incredibly powerful, and it will do more than anything else to help your talk land.

The most memorable talks offer something fresh, something no one has seen before. The worst ones are those that feel formulaic.

Many of the best TED speakers don’t use slides at all, and many talks don’t require them. If you have photographs or illustrations that make the topic come alive, then yes, show them. If not, consider doing without, at least for some parts of the presentation.

A little more than a year ago, on a trip to Nairobi, Kenya, some colleagues and I met a 12-year-old Masai boy named Richard Turere, who told us a fascinating story. His family raises livestock on the edge of a vast national park, and one of the biggest challenges is protecting the animals from lions—especially at night. Richard had noticed that

The biggest mistake we see in early rehearsals is that people move their bodies too much. They sway from side to side, or shift their weight from one leg to the other. People do this naturally when they’re nervous, but it’s distracting and makes the speaker seem weak. Simply getting a person to keep his or her lower body motionless can dramatically

Getting past this point is simple, fortunately. It’s just a matter of rehearsing enough times that the flow of words becomes second nature. Then you can focus on delivering the talk with meaning and authenticity. Don’t worry—you’ll get there.

If you frame the talk as a journey, the biggest decisions are figuring out where to start and where to end. To find the right place to start, consider what people in the audience already know about your subject—and how much they care about it. If you assume they have more knowledge or interest than they do, or if you start using jargon or get too