The biggest thing you need to do to pass as a female is just to be a female in everything you do. When you have to you go butch and let other's think what they will. They do anyway.
Then chose the lifestyle that fits your personality and whatever your job is. Then, if possible, let people only see you as female either femme or butch.
Actors can play whatever gender role they get a job for and some do it very convincingly. On some level, I believe anybody can to this.
Then you have to live safe and if you live your life as a woman, figuring out your romantic life is going to be a challenge you need to work out in a safe way.
Me, I am just a retired school teacher and stay-at-home gray-haired toothless grandma of 69. My family consists of us three females, my partner, her two adult daughters, and my partner and my son.
We don't have a car and are out walking, shopping, taking the bus together, and I get read as grandma, my partner my daughter, and the kids are my grandkids. Even when somebody asks about how we are related, and one of the kids explains that I am the boy's father, people have problems wrapping their minds about it. I am a female, but my partner accepts me as a male who dresses as a female. They call me Michael all the time and use male pronouns. However, when we are addressed as ladies they let it stand. All every was has seen where I live is a gray-haired grandma so that so far it has been a big so what.
Why my life works out the way it does, I really, don't know, but I know it's not from having any money that I did not have to work for and I have always lived from paycheck to paycheck.
When I show my driver's licence I say that I pronounce Michael as Michelle and they see the M for male, it's like the M doesn't register. Now at 69 and living in urban Florida, older people become invisible and people and people are likely to see an elementary teacher scanning the playground and the classroom. I have not really ever been considered as threatening nor really taken seriously in any masculine way. So over time, I may have been transitioning in every which way other than physically.
Just be the gender you are and dress the way that fits your lifestyle and use makeup in a way that it works for you. There are plenty of women who use very little makeup, so to be a woman you don't have to use it, or just use it sparingly like eye shadow, blush, a little lipstick, some mascara, and light powder
My facial hair is very light colored and my five o'clock shadow is hardly noticeable unless you get up close so if I keep myself shaved my whiskers don't scream out I am here. However, now if I were to make out with a guy, he would get whisker burn as soon as his lips touched my neck. I haven't made out with anyone for years.
Everyone has to change what they can, downplay what they can't change and have the wisdom to know the difference.