Is it because "down to the actual commands I was going to carry out,"
meaning a process that wasn't automatable?
Is it because "committed a couple of small mis-steps . . ." whoops! Lesson learned?
I don't believe this: "While I understand why I made these mis-steps, I'm also going to try to improve our environment so that people following my approach to writing up a checklist can't make them in the future."
Because everything else seems to be a one-off. So this lesson is, too. And if all the other one-off lessons aren't quite learned, what is the effect of adding one more? It seems unlikely to succeed.
"Doing this successfully requires me to remember and understand . . ." and that is exactly why that fails. Doing something successfully should be so simple that anyone can do it. The biggest idiot you know can do it without fail. Because you are an engineer and you design simple solutions for complicated problems. Such simple solutions that a complete idiot (or a middle manager) can grok them and succeed.
That, friend, is professional ethics in our field.
(P.S. Checklists are wonderful. Ask anyone who's flown in a plane or had surgery lately.)