According to the tags, the uploader is the artist. Given that, and the complete failure of my reverse Google search to turn the picture up anywhere else, I'd say there's a good chance this picture is original to the Booru. It happens sometimes...
Btw, artists, if you upload your work to the Booru please tag your names to help us out! Further, if you upload to the Booru and don't have a source elsewhere online, (we are honored), please fill in this website as the source so we and other users know not to go looking for the picture's origins. Thanks everybody!
Finally, nice work, Giulio. Whatever effect you put on there really helps blend the collage nicely!
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