Need help crossing finishing line

We are a Carolina couple in our thirties. My wife knows that I dress and is an occassional holder of the key to my cb3000. After many months of me talking about my cuckold fantasies this weekend she asked me to tell her my fantasy whilst she masturbated.
I told her that we were both dressed in our matching pink babydolls and black thigh boots, me with wig and cb. She had invited a guy she
met at the gym to our house and I went down to let him in. All through their lovemaking she was telling me to watch and learn. By the time my story had ended (with me cleaning her) she had cum hard.
I think I'm very close but would appreciate some online advice as to how to get her to agree to make it a reality. Hope to hear from an experienced bull.
love tammy xxx