As you begin preparing a PowerPoint presentation, consider whom you'll be addressing. A classroom crammed with novice students? A somber boardroom composed of barely attentive commissioners? A meeting room packed with veteran colleagues? A potential new boss you're trying to impress?
You'll want to tailor your message and your presentation format based on a number of factors, like the current knowledge level your audience possesses on the topic and how much it engages them. If they grasp quite a bit and (better) are already excited to hear what you have to say, then you can delve into more detail. On the flip side, if they know nothing about the topic you're about to present or (worse) hold doubts they'll be persuaded by your talk, you'll want to make sure your PowerPoint is especially straightforward and simple. In the latter case especially, really focus on letting your words do the explaining, in particular when it comes to persuading them on any complex ideas you need to convey.