Topic on Forum:Wiki Talk

So go ahead. Be aware that any page for yourself or your works that is solely by you is probably going to get a {{DOTA}} template put on it until other people start contributing to it. The DOTA template ("DOTA" = Death of the Author) puts a box at the top of the page that reads "The original version of this article was written by the creator(s) of the work being discussed. Other viewpoints are requested."

I've done this myself, on occasion -- see My Apartment Manager is not an Isekai Character for an example -- so I'd be a hypocrite if I was to say that other people couldn't make pages for their own works. The idea here, as far as I'm concerned (speaking as a troper, not as a mod), is to do your best to make the page look like any other work page on the wiki: no unwarranted disparaging, no shameless self-promotion.