Make your own ,paint the wall the color you want the background to be,in this case it looks creamy white do BM white dove, then get stencil of your choosing and use metallic paint to give the look of the paper, you may not have the exact print but you could duplicate the look with some creative thinking

I bought this wallpaper last year, it's called larson winter trees wallpaper - I bought it from here - http://www.wallpapersofdistinction.co.uk/larsen/wintertree/l6045-04 hope this helps :)

I don't know the exact paper but search for faux grasscloth, here's one. It could also be a silk effect, can't really see it that well (!) but Andrew Martin does one in marl which is a light grey http://www.wallpaperdirect.com/products/Eijffinger/Grasscloth-Light-Grey/111907?gclid=COrh3IP0gcwCFeQp0wodWt0I3A

I think you have used the wallpaper in the wrong place. I think there was already plenty going on with a TV, fire and niches for both and the paper would have had more impact on a flat wall.