So this dude does a series on youtube that is NOT transgender related.
He reviews solar stuff. Right off the bat I'm like "Wow, does he have a feminine face!". After watching his video, I scrolled down the comments, and like the 4th one is like "your eyes are way too pretty for a dude". So my Litmus test is usually running someone's face through faceapp. If you just don't have the facial features, the filter isn't going to help. But WOW, does he make an incredible looking female.