One of my sisters is a psychologist, and she likes to say that "broken minds are monster factories". Maybe that's it. I cannot say anything about it being of supernatural cause, unless I feel something of that nature emanating from your artwork. But, nada. Or, maybe I'm just numb right now.

And, if you're a Catholic, even if you're not a practicing one, I suggest you get a crucifix and a rosary and hang both in your room. I have a rosary from the Vatican, as well as a scapular. I feel safer with them than without. Both were given to me by my ex, and she's the one who got me back into the faith.