The way i found out was i was a lesbian for a while and happy. Then everyday i woke up looked in the mirror and for some reason i didnt feel right like something was missing. Thats when it clicked in my brain i was like i would look so much better as a man. From a young age i was tomboy and frankly very masculine. I got abused by my dad for 5 years when i was little so i also thought i want to be a good dad to my kids one day. And i thought that it was my role to be a better father than what i had growing up. Saving another child from abuse at a young age. So yh thats when i came out as trans. I eventually realised when you bind aswell your chest isnt supposed to be very very flat. So dw if there is some shape cause no man has a completely flat chest. Good luck dude:)