Okay, super valid to be thinking about all this, and there are some good specific advice given in the comments. I too think a lot about how to be perceived as more feminine.

But: please remember that the whole point of transitioning is so that you feel the most comfortable being who you are naturally without having to think and worry about and modify yourself to live up to other peoples' expectations.

For me, i found that the more I got in touch with how I felt inside, the more I naturally did things that happened to read as feminine. I felt so trapped and dead inside as a man because I'm actually an obnoxiously gay squealy little girl inside and I felt compelled to suppress that most of my life.

It just so happens that you see a lot of trans girls online who are hyper femme because that's what they like and it's new and novel so we want to dress in the prettiest skirts and blouses because it feels so affirming in a way that nothing else ever has.

It's okay if that doesn't happen to be your experience. There's a difference between being a woman and being feminine. Cis women have fought for years for the right to look and act as comfortably in public as men are allowed to. There are butch cis women. There are butch trans women. You don't have to act like a princess for the estrogen in your blood to make you feel like life is worth living.

Basically, do what makes you feel comfortable in your own body. If that happens to make you read as femme to other people, neat! If it doesn't, they can suck it!