By now most people have heard the advice about PowerPoint: Keep it simple; don’t use a slide deck as a substitute for notes (by, say, listing the bullet points you’ll discuss—those are best put on note cards); and don’t repeat out loud words that are on the slide. Not only is reciting slides a variation of the teleprompter problem—“Oh, no, she’s re

If you have something to say, you can build a great talk. But if the central theme isn’t there, you’re better off not speaking. Decline the invitation. Go back to work, and wait until you have a compelling idea that’s really worth sharing.

it’s usually much better to just sound conversational. Don’t force it. Don’t orate. Just be you.

Many of the best talks have a narrative structure that loosely follows a detective story. The speaker starts out by presenting a problem and then describes the search for a solution. There’s an “aha” moment, and the audience’s perspective shifts in a meaningful way.

If a successful talk is a journey, make sure you don’t start to annoy your travel companions along the way. Some speakers project too much ego. They sound condescending or full of themselves, and the audience shuts down.

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.

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

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.

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.