I see you have a very nice shot here although I think it could be helped out a bit in photoshop. BTW, the image looks somehow compressed and pixelated. I wonder if it was photobucket that compressed your image...
The only thing I would do is to use a polarizing filter to bring out some of the blue in the skys a bit and help darken the greens. That would be the only thing I would try...
JMHO
This shot was taken about 3 weeks ago along Highway 101 in Oregon. I did compress it a bit because it was just too big a file to upload quickly to Photobucket.
I've got to start carrying that polarizer all the time. I had several shots that were pretty "washed out" that day.