How did you find a mistress that didn't want money
Spoiler alert, you won't find it on Tumblr. At least, I don't think so. 99% of the "Mistresses" are only here for money and will ask for tribute or a picture of you to blackmail you. I personally find play partners on FetLife. It works mostly like that: going to event like munch or munch&play, meet people, take contacts. It can take time but it worth making the effort as you will meet real people that respect the basic rules of bdsm such as communication, consentment and empathy
High heels
Stockings
Panties
Bra
A very short dress or a very short skirt with a lovely top 😍
You don't give someone the key to your chastity cage unless you WANT to feel powerless. Your desires are now irrelevant. I'll be using you as a sex toy to pleasure myself.
Here is my place
Remind him that he doesn't deserve to cum. Both when you lock him up & while he's locked. Oh, and especially when you clean and relock him. You don't have to tell him why he doesn't deserve it. He can try all he wants to earn release. He never will. He's male. He'll get it over time. He can't earn release through merit. Release only comes by your grace. You are a Goddess. And he will worship.