Need help getting to wear her panites

It has always been a fantasy to wear my wife's panties with her.
This morning when I left for work I joked about wearing her panties and she played along and seemed to enjoy it.

Later I emailed her that they were riding up, but I felt pretty. She said not to dig them out because it is unladylike. I told I would remember that for next time.

Now, what is my next move?
How do I get to wearing her panties with her?
From there I want to get to her turning me into her sissy and cuckolding me.