Are you sure ou drew this?
My uncle Simon drew one exactly the same, except it had a background behind it (skulls on the floor and a cloudy sky with a large moon). I know he drew it because I have seen the original he drew with pencil. I also have a photocopy of it in my room. I don't think he copied it from anywhere, and he definately didn't trace it. I have seen some of his other drawings and he is the best artist I know (and before you say he might of traced it or whatever, I have watched him draw with nothing to copy from an he is awesome)
I know it seems like I'm slacking you off, but the way you talk about how you didn't copy things from anywhere sort of adds to the suspicion.
"and its been on many sites, but i am the origanal drawer"
"About my art, Yes some of it is seen on google or what ever sites, but it is to my presumpsion, that i have posted those picture to sites and what not, it is not my fault people steal it and post it to google sites..."
It's still a good picture and that, but I can't help feeling you stole it.