Hello @Netta, and welcome! 
EDIT: I just saw your introduction post- it’s perfect! Thank you for sharing it 
The rest of this post can be ignored (but I’ll leave it up in case it might help someone else trying to post for the first time!)
You were able to successfully reply so you’re already off to a great start!
When you’re ready to make an Introduction post of your own, all you have to do is create a new topic. Can you see the button on the main page of the forum ( https://forum.spells8.com/ )? It should be over on the right-hand side and say “+ New Topic”.
If you have any trouble, there’s a guide on making posts here! You are also always welcome to reach out to me or any of the Moderators- we are here and happy to help 
Blessed be!