How to change facetime email?

Me and my older brother share an apple id and use the same credit card and everything and the email we use for apple id is his, but I accidentally made my FaceTime email our apple id email, so how do I change my FaceTime email (so my brother can use it) to my other email without making a new apple id or like restoring my iPhone?

You will need to call apple support to resolve this issue.
http://www.apple.com/...m/support/