Keep it to yourself, then revisit it a year later and laugh at how little you knew. Maybe then update it and publish it since it will have both a beginners perspective and an experts perspective.

There is a high possibility that you'd be surprised how many dark corners you visited a year before. Depending on the subject you may deal with quite small surface area on the daily bases while preparing the tutorial you had to dig much deeper.

>How Not to Xyz

Yes, this is exactly what artist do when practicing their craft