Good use of the photos. The angle of the two riders to the right is good, it really looks like they're angling with the river. Good placement of all the Nazgul, though the one in the foreground does seem a bit added on...it may be the lighting. The shadow under the horse looks Photoshopped as well. I personally think the piece would flow better together as a whole if the left-side Nazgul were moving with his companions--the two to the right are booking it and the one on the left has stopped. As for the rest of it, the contrast between light and dark is great. I definitely couldn't have done better myself!