Just like the others said, magick cannot do that.
If you feel you would like to be the opposite sex, you could find a therapist that is specialized in that area and talk with them for a bit to see if surgery could be an option for you. My friend from my old school wants to change his gender. He told me that in order to be accepted by a surgeon to do the operation, you need to have seen a therapist prior to it to prove that you could psychologically handle the changes. This is just an idea. Or, if you're more into feminine style, try cross dressing gradually to experiment and see if that is who you truly want to be. I hope everything works out! Blessed Be!