The halos that Bryston3bsst refers to can be caused by over sharpening or oversaturation, not always, but often. I found it a little hard to determine if either was the cause here. The other thing I noticed is that there is some kind of a "spot" in the lower middle of the image in the sky. Hard to tell if this is a bird in the distance, or dust on the sensor. Regardless, I would have cloned it out as I found it a bit distracting.
WesternGuy