What you have to do is imitate a female... follow your wife around the house reapeating every move she makes (don't let her see you though)... and you will get an idea how to move.
I've had some success pretending I have a string attached to the top of my head pulling me up...helps you sit properly and walk with your hips. The other thing that helps is to pretend your elbows are attached to your waist, it forces you to use your arms in a more femine way.