I have found out that I was bad at card making when reviewing the first cards I made after a lapse of time of not using Anki. My then self got frustrated and irritated by how vague and non-specific the cards I made myself were. I certainly learned something about my memory and cognition. The article is long, but it has some insights that resonated with me. I think the quality of the cards one makes is as important, if not more so, than spaced repetition.