Just letting the admins know that I think this wallpaper is a rip:
https://www.wincustomize.com/skins.asp?library=8&SkinID=1697
I've seen it before in various poster shops, and I think my friend even has it on his wall in his room...
I seriously doubt the guy is the original creator, but if he is then I apologise, however why would he be uploading it to a free download site if he has world-wide commercial poster contracts?