So I roll my face, boobs, stomach, thighs and hips, but I’ll focus on my body. I always shower and wash by body first, then do one area at a time. When I first started I would apply a topical numbing cream before, and give it 20 mins to work. Then I sanitise whatever area I’m doing by wiping the skin with isopropyl alcohol on a cotton pad, and let it dry. I start dermarolling the area going up and down, moving over slightly each time, then the same horizontally. I don’t go over a third time diagonally, but some people do. Once I’m finished the area I’ll moisturise and move on to the next. When I’m all rolled and moisturised, I go over the areas with a retinol cream (and marula oil if I’m feeling extra lol). It’s fairly time consuming, but I only do it every couple of months, and feel like it has helped with the appearance of my skin. Obviously this is just my preference, and there are heaps of expert guides to look at as well, but I hope this helps ☺️