Hi Steve,
Just gave it a quick going over. Basic issue was you've pushed the exposure a bit too far; expose to the right is great in theory, but there is a risk of losing highlight detail (as was starting to happen here) - for this kind of shot you're actually better to bring the exposure back 1/2 a stop. Other than that, I just quickly did the usual (sharpening, subtle vignette, matte etc).
How do the levels look to you now? (I'm still "on alert" regarding your monitor levels).