The image itself isn't bad - competently executed from a technical standpoint. However with your processing you seem to be having problems with keeping the luminosity in the sky consistent, It is really distracting for me -I'm looking at the patches of sky around the tree tops. If you are using a polariser I suggest you either take it off and use a ND-grad or simply set the polariser at a specific rotation and leave it fixed for the remainder of the images to be taken.
I hope you aren't using photoshop's automatic merging feature - I never use that these days, I use a
wacom Digital graphics tablet and I merge my HDR images and panoramics by hand.