There is not much detail and not much contrast.. especially in the first image. It seems like it needs less brightness and more contrast. Actually it could use a punch in the clouds and in the water to bring out some depth. (see your image I processed below)
The second one I think I like the purple more.. it looks more airy to me but is still lacking something. I think it needs some purpose.. what is the central point you are trying to display? Because the scene is zoomed into a dead space.
I do like the positioning of the water though.. but the scene itself is missing something.
I don't like the positioning of the trees.. especially the large, dead one. I think it would work better when the trees are near the sides. Otherwise there is this awkward dead space between the tree and the edge.. But that could be completely ME with that problem.
Actually, I think that scene might have worked better if you HAD used the dead tree as your main subject.
Ok so I didn't touch the trees but I did cook the image a little to bring out some depth.. Google Nik Suite (Viveza -- lowered brightness overall, increased structure in clouds and water; Color Efex Pro -- Added Contrast, Dynamic Contrast, and lightened the center/darkened edges using a very large horizontal center size and subtle values to brightness and darkness). It still isn't where I'd want it to be, but that is the extent of my skills on a JPG.