I'm so glad you enjoyed it! It really is my all time favorite fandom fic :)
I'd love for you to introduce yourself at coming out! The best way to post to any community is to click the post option from your own profile. Once you get to the page to create your post, there will be a drop down at the top which says "Post to" and you should have the option to post to any of the communities you are a member of there. Let me know if you have any other questions! I had a terrible time figuring all of this out when I first joined fandom :)
You are always welcome to email me with any questions, though I must admit real life has been keeping me pretty busy and sometimes I'm slow to respond.