Cora-

I couldn't bring back the highlights, but overall added some details where I could.

First, in a duplicate layer, I darkened the upper end of the curves about 25%. I erased the gray from around the frame (you can still see a little in your © notice).

Flattened those layers, and increased saturation by +14.

Then, in a separate layer, I darkened the middle of the curve 35%, and erased from the middle out to crate a vignette. The eraser was set at 550 pixels, and 35% hardness.

Once again I flattened and dodged and burned a little bit more to add isolated contrast changes. I probably should have sharpened it a bit too, but didn't.

Nice image, thanks for giving me a good one to play with. I hope you don't mind.

~V~