Ok, that’s all the SPaG I see.

So, the idea is…somewhat good.
However, we don’t get what they make, and more than likely, the best solution is to make entities on your own.
Though I do like the entity making other entities.
It adds a whole new danger to them, making them scary and could strike fear in wanderer’s.
Now, in the Author collapsible, the Author name means your username. So, in your case, it wouldn’t be MJ Howler, it’ll be b1zarr3vel.
To add Links, simply copy the page link, so: http://backrooms-wiki.wikidot.com/level-11. Then, place a |(this is not a L, but a vertical bar) along with what you want to name the link with. After that, put three brackets; [[[. For Example, The Endless City. Without the brackets, it would be http://backrooms-wiki.wikidot.com/level-11 | The Endless City.

Idea: 7
Execution: 5
Entities: 6. Stalkers sound interesting(I did read the Stalkers tab to get an idea of em)
Story:(I don’t believe you tried to get one, so no score for this.)
Creepiness/Fear/Would it strike fear in a wanderer?: I believe they can be slightly more creepy. The drawing is creepy, however just not enough. No score, rn. You don’t have to go with creepy, just tell me what feeling you want the most strike in.
Official sounding: 8.
Potential: 10.
Overall(based on calculator): 7.