Wow that is a beauty, looks very happy
Probably a million methods, what works for me is cut above and below a node (where it has a join and little bumps and a leaf coming out). Make sure your secateurs are clean. Set aside for 24 hours - this enables the freshly cut end to callous over so it’s hardy - and then plant. (Or if it hasn’t been quite 24 hours yet but the leaf looks wilted, go ahead and plant). I don’t bother with rooting powder. And I’ve never had any luck rooting in water first for some reason but other hausfraus may have tips.