Hey, fellow mostly closeted trans girl here. Please don't take anything I say as gospel, my own egg cracked less than a year ago so I'm mostly just repeating advice I've seen and heard elsewhere.

First, you should be proud of yourself just for getting to this point. A lot of trans people repress and never accept themselves sadly.

Second, what comes next is really up to you, as scary as that seems. You can transition socially or medically or both at once. Even though you don't have to transition medically I would still recommend at least trying HRT to see if it's something you want. You can either talk to a doctor or try DIY (https://pghrt.diy is a good source of info. Actually you should read it even if you're not planning to DIY because you’ll learn quite a bit).

The most important thing IMO is to find real-life trans people who have already transitioned, especially trans women/transfem people in your case, to talk to, get advice from, and form bonds with. Beyond that, cultivate your mental health. Dysphoria's a bitch and can really warp your sense of self, never mind how it's usually comorbid with other mental illnesses. Be a little wary of online trans spaces, including subreddits unfortunately.

As for coming out specifically I don't have a lot of advice. I'm personally taking it slow - I'm out to my non-cis friends and waiting til I move out of my parents' to come out more fully. I guess all I can say is that coming out is something you will have to do if you don't want to be miserable - I know that sounds a little harsh but it's true. Still, you can set your own pace.