Can i post a my poem about Henry The Murderer?
If it meets the quality standards, yes.
You can't post it in discussions though, or it may be removed. You need to create a page for it, as with any story.
Ok
Where is page creator?
Here is the wiki's quality standards section, if you want to give it a once over.
To create a new page, there's a dropdown menu in the top right that has the option "Add new page"
What do you think?