Two short sample decks I made to show how I format presentations: an operations review for a fictional bakery, with a native chart and an action table, and a service introduction for a fictional bike-repair business, with a process diagram. Everything stays editable: real text, native shapes and a real chart object with its data embedded in the file. They're fictional portfolio samples, not client work, and the figures are illustrative. I checked them in LibreOffice renders, so your own PowerPoint is the final check.