Dang! Seyranna beat me to it! You have inadvertantly mastered the single biggest step in making your voice sound female, which has the added benefit of hiding your adams apple.... When you pull it up with that swallowing motion and then speak, you take out the male resonance, moving the vibrations from your chest to your head, which is what you want. You can play around by gently pushing on your adams apple in the same way and practicing speaking. Add some more refined diction with a little breathiness at a higher pitch (but NOT falsetto), and you're on your way.