Note: ADISC does NOT allow personal ads. This includes "looking for ____" or "anyone in ____" type introduction posts. To write a good introduction, focus on explaining who you are, NOT what you are looking for. The goal should be to help other people get to know you a bit.
Welcome to the forum! I hope you find it a great place to share experiences, seek advice and chat to other ABDL's.
In terms of stories there's a whole section for it within the forum. https://www.adisc.org/forum/forums/stories.6/
There are also several members (including myself) that have shared our own origin story if you're interested in reading more autobiographical stories rather than fiction.