I've been looking at your gallery and what I'm finding is that there's no detail in your shadows and there's no detail in your highlights, the blacks are far to black and to many colours are over saturated I don't like to be picky some of your compositions are fine but if you want to improve i would be seriously be looking at these points too many digital photographers on this site go way over board in manipulating their photos to a point that they don't look real anymore and I find this a shame..
I like how the layer-like feel of the picture which makes it resemble a cut-out. I also enjoy the softness of the clouds surrounding the mountain in contrast to the sharp sillhouettes of the trees. Something about little points of light beaming from the leaves at the bottom of the picture, plus the colors, gives me a very warm feeling. Great work.