I somehow pass so well that people think I'm straight (I'm a bisexual trans man). I didn't really try to learn masculine manneirisms and I thought I was somewhat feminine, but apparently, I'm just a regular guy for everyone else.
Nobody questions when I go to the men's restroom, nobody guesses that I have a boyfriend and sometimes I even go out with old feminine/unisex clothes I used pre-transition. Do I have any advice on how to achieve that? To my surprise, not really. I just dress masculine, have masculine haircuts and hide my breasts... That along with testosterone for more than a year.