Looks like you got a lot of good comments here. I wasn't sure about the white vignette but I can see how it might represent the white light of the afterlife. Interesting and thought provoking!
I am completely and totally floored that this hasn't been done before. I wanted to do my nightmare shot in a cemetery, but my husband was already thinking it was creepy, so I just did it inside the house instead.
I just searched through ghost, cemetery and graveyard shots and couldn't find a one! Good thinking -- and good noticing that it hadn't been done! (and cool shot as well -- I like the horizon tilt).
The reason I'm not voting in this challenge is because of images like this and probably my incorrect take on the challenge title/description. I like this type of photography and have seen the same 'style' here before.
I like the composition, jaunty angle, viewers angle and perfectly placed 'character'. I also like the overall treatment though a little more black might have helped imho.
As I said, I'm not voting. If this where(say)a free study I'd be on the 7 button but in this challenge probably a 5.