Submitting your own stuff is OK here. You can add some comment explaining that you are willing to answer questions, but it is optional. Anyway, most people here will assume that the owner will read the comments sooner or later. (Reposting and reposting and reposting your stuff is not OK.)

Anyway, this is an article that is on-topic, but it is not a good ShowHN. From https://news.ycombinator.com/showhn.html

> Blog posts, sign-up pages, and fundraisers can't be tried out, so they can't be Show HNs.

(Disclaimer: I prefer rebasing.)