The presentation tip that helped me most: build the closing slide first
Most of my presentation tips over the years were about making slides look better. This one is the opposite and it did more for me than any of them.
Before I make a single slide, I write the last one. The slide with the ask, the decision, or the one sentence I want people repeating on the way out. If I can't write that clearly, the deck isn't ready and no layout is going to save it.
Then I build backwards. Every slide has to earn its place by moving the room toward that closing line. If it doesn't, it gets cut. Sounds obvious, but it quietly kills the "here's everything I know about the topic" deck that goes nowhere.
The side effect is my decks got shorter and I stopped reordering slides five times the night before. The order mostly writes itself once you know where it ends.
What's the one presentation habit that actually changed your decks, not the flashy trick, the boring one that stuck?