This picture has good potential, but the contrast has been drastically reduced. I think you used too much dodging or shadow/highlight in Photoshop. If you can use a tripod, take 2 seperate exposures for the sky and ground, then merge them with a layer mask. Also be sure to clone out sensor spots (upper left corner).
Good exposure on this shot! Watch out for sensor dust in the upper left hand corner. Doesn't bother me too much, but others might comment on it. The colors came out really nice here.