Female led relationships discussion

I’m all set to begin my sissification journey! However, I’m unsure of how to break the news to my wife or keyholder. My plan is to ease into it by wearing her panties. A couple of weeks back, I put on a pair before going to sleep and was eager to see what she thought in the morning. Her response wasn’t very positive! Now, I really want to ask if I can try one of her corsets this weekend. I just need some guidance on how to approach her about it.