Yes, that would definitely get read. At least by me.
I never read any creepypastas before, so I had to look up what Creepy Black is. That alone is a good story. To see that a fanfic is going to go deeper and turn the idea into a horror/mystery story is even better.
Personally, I can't think of any advice to give. But in answer to your question, as I said, the fic will be read by at least one person.