Phil-Those shots are awesome! Especially #2. I agree with Brian: Go back! Shoot some more! Maybe get some cloud formations in there too, with a bright blue sky, or all B&W. I need to shoot more stuff like that.
When I go to Chicago, I take I-80 across IL, and a few miles into IL, there is this old barn and windmill (and maybe a silo) sitting just off the hiway in a field, with a tree or two around it and nothing else to distract from the shot. Every time I am going to head that way, I say, "This time I'm going to stop and shoot that thing", but every time I get there, I'm so strung out from driving that I just blow it off! Maybe someday I'll shoot it and give it the time it deserves. It would really be an awesome shot, I think.