I love the BG! Looks like a palace's hall though, the curtains and the window remember me some kind of Gothic church. And, something that really, but REALLY love XDDD, is the way you painting it. It's really very well done x).
There're only two things that doesn't convince me:
First, the window's frame? it's a bit blurred. i know, the light make it brilliant and not clear but yet i
believe you should have made the lines similar to the columns or the curtains, they looks more clear (the exactly word
i'm looking for is "n