Holster that mouse! Before you crack open PowerPoint to crank out some slides, take a step back and sketch. Your time in front of the computer will be far more productive (as in, you’ll save hours roaming stock photo sites) if you think through your slides on paper before you design them electronically.
I used to just print off a blank slidedeck of six slides on one page from PowerPoint and start my sketching. You’ll see here that I’m not making anything super beautiful or artistic. Those are really crude sketches! They eventually turned into this deck:
I go through this process so often I made my own Slidedeck Planning Sheet, now downloadable for your use. It looks like this: