Funny thing rachel89, I had the same thought a few days back.
For me being female is so natural, it was hard to make the mannerisms a habit, but I adapted very quickly, after a few weeks it was second nature.
I glide in heels, even run in them., (The heels was easiest thing for me, my cis-female roommate explained the walking technique to me, and within an hour I was walking heels like I have done it all my life) I can even walk in 6inch heels.
My makeup skills are on par with a woman of my age. remembering to sit like a lady was a chore in the beginning. Even in sex the traditional submissive female role is natural for me.
My roomMate says she cant believe that I was ever a guy, she says I am so girly.
I think most girls like us are sometimes at a disadvantage when we begin our transitions, as cis-girls learn how to be ladies in their teens, they learn makeup etc.. Me i went full time at the age of 21 (I am 26 Now) and I had to learn a lot of things girls learn in their teens.
I do wish I could have been a teenage girl.. but I am caught up now