Well, I think I took everyone's advice and shadowed the sheep, added more spatter, darkened under the sheep in the barn, added a shadow to the beam / corner post.
I am calling it done, but if I were to do over I would do the bushes differently, the fence should be a more weathered grey, and lighter in tone. Also all the running down hill should be at the same angle. But for now I am calling this done.
Thank you one and all for the great advice! The image is better for it, and I learned a thing or two, about a thing or two, if you know what I mean.
Ooops! Forgot to include the image...