The wonderful travel photographer Jimmy McIntyre (Through Strange Lenses) accepted my challenge to edit the RAW file of my photograph of the beech tree that I took last fall in Belaustegi, Gorbea Natural Park. He made a great tutorial on Youtube explaining how to develop a foggy, moody landscape in Photoshop. You should definitely check it out, I'm sure you will learn a tip or two!
Thanks once again, Jimmy!
Here is what I did, and on the video you will see his version.