I am not familiar with the book but I more than like the art for it, and no text covering it either. I like the canine and the stag in the distance of this image, at sunset. The plain yet elegant imagery is as good as ever even to the moss and the oak trees very nice.
Well done! I was going to say it seemed a little unbalanced compositionally until I read that it will wrap around front and back covers. But then again, what am I thinking- you wouldn't make that elementary mistake anyway! LOL Great job!