Then sit down and "tell your story" in writing as if you were telling it over beers at a pub to a few new-ish friends who don't all equally well know your backstory. Get someone to read through it before publishing it. Good feedback is very helpful. Also, grammar check, spell check, etc.
You want to be somewhat entertaining, but more importantly you want to capture as succinctly and compellingly as possible why you are uniquely/especially qualified to offer a new and better solution to an old and tired problem space, basically.
There's also a movie clip I like and I've written about why elsewhere, so let me link you to that write up:
https://www.reddit.com/r/CitizenPlanners/comments/ecr2vv/get...
I actually suck at the doing business thing or I would no doubt have some brilliant tie-in here to "And if you have trouble with that, you can hire me..blah blah blah." This is why I still work for a writing service. And I blog.