This is good because she is pretty and your cock is big. But it falls flat in the authenticity category. Watch a few real hidden cam videos of hookers and their customer (like Parlor King and Party Manny). Watch some of the newest Japanese porn., the kind where she seduces him by slowly removing his pants and sniffing through his boxers. Try to make your models less aware of being porn stars and more aware of being sex partners or lovers for hire.