Hello Kami, welcome!
I think your intro is just fine,

no need to be nervous but it's understandable. I never shared much about myself online (I am not even on Facebook) but what I discovered here is - by bringing things up I have learned a huge amount about myself. I owe a significant amount of my self confidence to this place and the people here. Several important decisions I made were after seeing other members' experiences. I have found the details of transition are so much easier after realizing I am not alone, and having met so many here who are going through similar things or have in the past. And I can confirm you do have some self confidence - you proved that already by posting here. It really does get easier.
Being non-binary is quite cool - several of the most creative individuals I know are non-binary. That's why it is called a gender spectrum - there's no reason to limit yourself with outdated definitions of gender identity.
One thing we provide to all new members is a set of guidelines and information - things to help you navigate more quickly, and to help keep things running smoothly. I will add this information here for you.
A Cautionary Note:This is a public forum so please remember when posting that
The Internet Never Forgets, and the various web crawlers and archival sites out there may retain information that you post.
We cannot ensure that any information you share on the site will be protected from public view and/or copying or reproduction. This warning is also listed in the Terms of Service listed below.
If you give out personal information on Susan's you are responsible for any consequence.
I also want to share some links with you. They include helpful information and the rules that govern the site. It is important for your enjoyment of the site to take a moment to go through them
Things that you should read
Kami, I wish you the best in your adventure! I think you will do great. Thank you for becoming a member.
Kendra