Filming it is fine, but to make real change and erotic. Make the sub/slave service you in the mirror, big mirrors , small mirrors always place so she can see her face . Her feeling what she is thinking at the exact moment is mind altering. They will adjust to find ways to make more sexy , will make them work harder and more effort , seeing exactly what she is like when she is pleasuring you is empowering for her. And for her to really see his joy as he makes her a sex object. My very favorite is the mirror next to chair during blowjob, and the small hand mirror right at the cock. You wont regret it
I'm willing to bet if people hadn't been brain washed into believing anal is painful, applied appropriate amounts of lube and warm up, then gave them an experienced partner who knows what he is doing... I'll bet they would love it. For sure you do need to learn to relax your sphincter but with all the other conditions and a lack of fear about pain that should be easy. The one exception would be those who really struggle every damn time they go number 2. I think they are permanently upright in the ass - but frequent anal sex should actually help them get over that.
Es sind alle Mädels, die gerne Pornos drehen möchtest, aber sie scheinen nicht auf alles vorbereitet... Anal ist die Königsklasse und es gibt keine Alternativ.