What Next??

Ma

So I think I found a girl for a threesome. What should I do next? I’ve never done anything like this, I’m really shy. I want her only for me. So my husband would do stuff with me and I would do stuff with her. He would watch. What are some rules and guidelines? We will get a hotel because I don’t want her in our house. I’m so nervous but ridiculously excited. Help me out!