How to get started with orgasm denial?

So I (25M) recently came across this topic and find it very interesting and would like to try it out with my girlfriend (21F). We’ve got a pretty good sex life…open with each other, know each others body’s well, fairly aligned libidos, both of us cum almost every time. She is pretty submissive and will do most of what I say during sex. That being said I haven’t pushed it too far. She likes being called a “little slut” or “good girl” and that kind of stuff. She calls me “daddy” pretty often and likes to sit on “daddy’s lap”. She likes getting her reward (my cum) for being a good little slut. She will sometimes get frustrated if she can’t cum from PIV, but I usually will finish her off with my mouth. We usually cum at the same time (PIV) or I cum first (ill finish her off with oral after). We’ve done anal a few times, and she even licks my asshole from time to time (I return the favor of course).All this to say, I think she’d be into this idea. I want to change the dynamic and turn her into being truly submissive. I want her to beg for her orgasm. I want to make her cum just by teasing her with my cock or whispering in her ear (lofty goal, I know). I am willing to put in the work to make it happen.My question is: what is the best way to start implementing orgasm denial? Should I just start doing little things to make her more submissive (making her beg for my cum, denying myself orgasm and making her work harder for it, etc)? There’s just so much info to take in haha….but it sounds amazing and I’d love to get into this. Any help is greatly appreciated! Thanks. female orgasm denial Get your own Orgasm Control toys: For men: http://www.amzn.to/1V6XQvv For women: https://ift.tt/1UWn54n