One of my girlfriends and I discussed this very topic tonight. I feel very feminine internally, but I am sometimes afraid to express it due to fear. I feel like I have created a robotic mainly persona to display to others so I won't be judged or detected. Unfortunately, I hate that this persona and feel like I am playing a false role even though I am being me. As a result, I hate the way I interact with others because I feel like I can't express myself or socialize in an honest manner. The best advice I can give is be the you that you want to be. It might feel difficult and forced in the beginning, but things will come natural the more you do it. Yes, you can observe other girls and learn from them. There are common mannerisms that you can learn and help you fit in more. That is not a bad idea. But, the most important thing to do, I think, is for you to act the way you want or wish you could act. Go from their and just be yourself. You are a girl and will have a natural feminine side to express once you discover it and allow it to take form.