I agree in general but actually am an exception to number 2. I prefer the request being phrased as a polite request, or maybe as “I would like you to..” or “I want you to…” rather than just do this, even if the relationship is established. Submissive as I usually am just saying “do this” or “do that” coldly raises my resentment hackles up and puts me in the wrong mindset. And I know others like this. Just a note that you might want to find out what sort of person you’re dealing with and adjust accordingly if you want the best results. YMMV.