Very recently I decided to tell two friends that I'm a guy…. And he was great, he was so nervous not knowing how they were going to react! When I told them, they got up from the chair and hugged me, all good with them.This situation has encouraged me to think about telling more people (I don't know when but I will) and above all to encourage me to tell my mother later. I'm almost 100% sure of my gender but I need to experiment and I think the only way is to say it.
Congrats! That's a great first step, and it sounds like you rocked it! Good luck with the rest of your journey!