I love this piece, and your art in general. I'm sorry to be the barer of ill news. Some scumbag on facebook thought it was okay to use your art (presumably) without permission (as they didn't even give you credit for this lovely piece). Here's the link to where they posted it: [link]
When I left a comment giving you the credit you deserve, one of the moderators of the page got all huffy and said that the watermark was enough credit and they didn't have to give any more credit than that. D: I disagree, since it was actually pretty hard to make out your user name from the watermark.
Since then, they have deleted my comments and have set it so that people can't make comments on it anymore.
Furthermore, when I found out that I'd previously liked it (probably because I like it here on deviantArt) and tried to unlike it, I wasn't permitted. I've also been blocked from posting on that page, whereas my other friend Sara is still able to post on their page and make comments. That's not okay in the least.