I wouldn't do a Patreon unless you have a bunch of art to put in the story.
Its tough being a writer of fetish content these days. Put it on Amazon or Smashwords, and you might make a few bucks if that will help validate the time you spent on it.
But if you do that I'd run it through Grammarly a few times to get it polished.
https://www.grammarly.com
I'd recommend the premium version.