A Mistress

Hello,
I am new to this forum please do forgive me if my query has been answered previously elsewhere.
I have been seeking a mistress for some time, I have used the internet to search for a mistress but so far with out success.
A lot of people advertising as a mistress have absolutely no idea what being a mistress entails, a lot of people do it just to earn a quick pound there or here. Fair play to them, I cant argue that choice considering the climate today.
However, my issue is I am having a problem finding a genuine dominant female, one of which I can indulge with and live the moment as a sub. I am not after a quick sexual experience, just some one I can serve as a slave for a period of time. I would be happy to explain more.
Can I therefore ask for any recommendations as to a true dominant female, with who I may present myself to. Apologise if this has been asked many times before.
Thank you.