Two people can follow the same recipe and get different cookies. Instructions matter. Hands matter too.

A method only takes you part of the way and the rest is whoever is doing it. The same steps give different results because of judgement, timing and the small adjustments nobody writes down, which is why copying somebody’s routine exactly does not copy their outcome. That is not a flaw in the instructions. It is the part that can only come from repetition.

Follow the method properly first, then watch where your own judgement starts making a difference. Keep notes on what you changed and what happened. Your version will not match theirs, and eventually it will be better in places.