There’s a gap between knowing how presentations should work and actually getting them to work that way. This is about closing that gap — specific techniques, not general advice.
Start With Structure, Not Slides
The most common mistake is opening PowerPoint and starting to build before knowing what you’re trying to say. Slides are containers for ideas. If the ideas aren’t clear first, the slides will be muddled regardless of how much time you spend on them.
Spend 15 minutes writing a one-paragraph summary of what you want your audience to know, feel, and do after your presentation. If you can’t write that paragraph, you’re not ready to build slides. If you can, the slides almost write themselves — each major point becomes a section, each section gets a slide or two.
The One-Idea-Per-Slide Rule (And When to Break It)
One idea per slide isn’t a rigid law, but it’s a useful default. Slides with three claims, two charts, and a table of data are almost impossible to follow while someone’s talking at you. The audience has to choose between reading the slide and listening to the presenter — and they’ll usually pick reading, which means they’re not actually hearing what you’re saying.
The exception: summary slides, where the point is to show everything at once so the audience can see how the pieces fit together. A project status summary showing six workstreams on one slide works because the message is “here’s the full picture.” A slide trying to make six separate arguments at once doesn’t work because there’s no coherent message.
Using Speaker Notes the Right Way
Notes are for the presenter, not the audience. They’re not a transcript — if you write out every word you’re going to say, you’ll end up reading from notes instead of talking to people. Use notes for things you genuinely need reminders about: a specific statistic, the name of someone in the room, a transition phrase to get from one section to the next.
A practical system: put your key supporting points as brief phrases in notes. “Q3 was 15% above target” rather than “As you can see, our Q3 numbers came in at 15% above our internal target, which represents…” The first is a reminder. The second is a script.
Slide Count: Less Than You Think
A 30-minute presentation doesn’t need 40 slides. It might need 15. The pressure to fill slides comes from treating slides as proof of preparation rather than as a communication tool. More slides doesn’t mean more thorough — it often means more noise.
A rough calibration: 1–2 minutes per slide for a presentation where you’re explaining things in depth. 30–45 seconds per slide if you’re moving quickly through high-level points. A 30-minute slot at a moderate pace supports about 20–25 slides. Build for the pacing you actually want, not for the pacing that feels thorough on paper.
Typography: Three Rules That Cover Most Cases
Use a maximum of two typefaces. One for headings, one for body text. Pick typefaces that contrast each other slightly — a sans-serif heading with a slightly different sans-serif body works well. Using three or more typefaces looks like you couldn’t decide.
Body text on slides should be at least 24pt. Anything smaller gets hard to read from the third row of seats. If you’re trying to fit text that requires a 16pt font, you have too much text on the slide.
Avoid all-caps for anything longer than a short title or label. It’s harder to read and reads as shouting. Use it sparingly for emphasis — a single word, a short phrase — not for sentences or paragraphs.
Color: Function Over Decoration
Color in presentations should do something — highlight the most important data point, indicate a warning, differentiate categories. Color that’s just decorative adds noise without meaning. Every time you add a color, ask what it’s communicating. If the answer is “it looks nice,” that’s usually a reason not to use it.
A practical palette: one primary brand color for key elements, one neutral (usually gray or off-white) for secondary information, one accent color for callouts or emphasis. Three colors is enough for most business presentations. Our color scheme guide has specific combinations that work well together.
Rehearsal Is Not Optional
The slides are 30% of a presentation. The delivery is 70%. People remember how you came across more than what was on the slides — which is simultaneously discouraging (all that slide work) and encouraging (the slides don’t have to be perfect for the presentation to go well).
Rehearse with the slides on screen, not in your head. The cognitive load of actually clicking through while talking is different from imagining yourself doing it. You’ll find transitions that feel awkward, slides that need to be in a different order, and moments where you have more to say than you expected — all things that are easy to fix before the real thing.
For guidance on how to handle Q&A and audience interaction after you’ve finished presenting, the Q&A guide covers what actually comes up and how to respond to it.
