I'm sorry, I had completely misunderstood what Show HN means. I thought it was the prefix for indicating the post was made by the poster (what the fine folks at Reddit would call "OC"). Somehow I had missed the https://news.ycombinator.com/showhn.html page.
That is confusing but you can do something similar-ish for a written self-post by writing a comment in the thread saying you're the author, etc. Tends to make the discussion somewhat better too since it seems to reduce tropey first post type comments.
