This image has already blitzed it's way across the Internet including Blogs, Facebook, Avatar sites and who knows where ever dot com. There's even a book cover. I hope your getting paid for this.
Yes, it's on Wattpad. It's also in 12 other places. Some of your other images are out there 3 or more at a shot. I couldn't check your whole gallery in the time I had but your work is definitely leaking out and being used. There's a browser extension for Google Chrome and Firefox that does a reverse image search. It's called TinEye. One click on your pic and it can show you many of the websites where your art is in use.
You are quite welcome. Your art is growing hugely in popularity so theft will be the unfortunate side effect. At least now you can stay on top of some of it.
I don't mind people posting my art as long as they credit me. I've only had one instance of someone selling a book with my work without my permission.
Can i have your permission to make a draw of it...?, its because i like to make draws of the Death!