I understand wallpapers (and by extension, art in general) doesn't have to be limited by reality, and I'm not saying it should be. But the implications of this picture bug me.
That bookcase in the foreground... so those books are just hanging out in open air, then? The space between the posts are not windows, this is less like a building and more like an open air tunnel. Ergo the books are sitting in the open air. That's a fantastic recipe to have all your books ruined by exposure.
Maybe this place doesn't get ANY wind. The sway in the hanging lanterns contradicts that, but sure ok. There are still microbes in the air, and visible insects for that matter, that will wreak havoc on material left to exposure. It's just a bad idea and for that reason I'm going to have to decline on this image. Good luck in the future, picture-kun.