When you’re building a presentation, you may be tempted to dive right into making the slides. Instead, take the time to draft it as an outline first. You may know your material, but the outline helps you focus on the important points without getting carried away.
Image from cmichel67
Instead of trying to create the slides, self-editing, and deciding on the slide layout all at once, start with an outline in a plain text document. Outlining helps you make sure you have a clear message for each slide, and removes the temptation to stuff each slide with too many words, or too many points. Your draft helps you focus on your message , and then you can move on to the other parts of the presentation (like the design and layout) afterwards.
You Could Be a Better Presenter, Here’s How [Distilled]