For me the atmosphere is wrong. There is a constant mist level over the whole picture and yet the mountains still have a slightly unreal look about them. I use VUE which is probably different, but I find that i usually have to exaggerate the fog and mist levels of the atmosphere, and lower the clouds to get a real feeling of scale and depth and to make high mountains work.
The lake and reflected sunset is very good and so is the composition. Mastering the atmosphere is the key to these images. I would also suggest some furniture in the images. They feel a little sterile. Perhaps a bird or two, maaybe some small trees. Investing in a few models would help a lot.
The picture as great looking design and colour and a very nice feel about it it just the water the is a strange purple effect that just does not work quit right.But apart from that very nice piece of art work.