The Calm before the Storm

Ok this is basically cr*p.
The background is totally based on this picture [link] by *Cynnalia-Stock I know, I know that's not quite right, but I can explain, it was for a contest, I had no time to make an amazingly original background 'cause of the freakin' deadline so I had to copy it from somewhere, I am not that creative or fast like some other lucky artists are, how I wish! BUT, I'm going to remake the background, besides it looks tremendously awful. So please don't start bitching 'bout it, ok? Thanks!
Now, the reference for the horse is by Mark J Barrett from his Equine Stock Gallery.