This is absolutely gorgeous, just like a sight taken from a dream.
I like the colors you chose, adding some light spots here and there. And the way you placed all the elements giving the composition some depth.
Also, these detailed patterns in the background look great. The more you look at them the more you like them.
The only thing that I'd like to point out is the raven's claw, I think the wood below the bird could use more shadow.
Nevertheless is an impressive illustration, it totally deserved to be on front page.