Canva is so much more than little banner ads and social graphics. There’s whole presentation decks, infographics and, to get back to the point, a whole bunch of worksheet templates that you can re-jig with your own content.
A lot of them look like they’re designed for school teachers but drop in your own font & colour scheme and they’ll look a lot more pro.
Course buyers want a fast track to a result, so anything that helps them get there without thinking or working more is going to be solid.
People will buy an entire high-priced course for one “magic bullet”, so don’t underestimate the power of pulling these out into a template of some sort.