These just aren't good. Unfortunately I didn't see your previous set(s) so I don't know if it's an improvement. The one that comes close is the last one so we'll leave that for last.
#1 It is significantly underexposed. The clouds which are supposed to be white, are closer to mid-gray. The brightest part of the photo (the white clouds around her head) are 237, 184, 142. First this means, they are underexposed across the board. Secondly, it means they have a very warm cast. The warm cast might work with the image, but the underexposure does not.
Why do you have the girl overlapping the dog? They become a blob, and although I can tell that there is a person and something with a tail, I don't know what's happening there. When doing a silhouette, be very careful with overlapping.
Branches at far left. Why are they there? Do they add to the image? If not, they have to go.
#2 The grass is almost exposed well, but the clouds again are underexposed, even moreso than #1 (I'm measuring via the eyedropper tool). Because it's close, it could be fixed easily with some curves adjustment layers or maybe even some raw adjustments.
Past that, there is a lot happening in the image, but nothing seems to stand out as significant. There isn't anything that is grabbing my attention.... no interesting detail, no interesting composition. It effectively communicates the scene, but it just isn't interesting to me.
#3 Again, underexposed, particularly the sky. This one suffers from more of the same as #2, only moreso. I don't know what you are going for here. You want me to see the "pattern" in the brush? Then why include the sky? You want me to enjoy the clouds? Why is half the image brush? etc... The image is organized into half sky, half brush. It's just not appealing to me. With #2, at least there was a tree which kind of "attached" the ground to the sky creating a link. Here, there is nothing. I don't see it, I don't get it.
#4 This is similar to #2 with a better white balance but more distraction. Power lines, fence posts, protruding limbs from the edges of the frame. Make sure to include only what adds to the image. Cut out more from the scene. Simplify!
#5 Now you can probably see why I believe this is by far the strongest image of the bunch. It is simple, including no unnecessary elements. The form of the girl is obvious (standing, looking, hands in pockets). The form of the rock is obvious. I don't see the connection between her and the rock other than it being used as a balancing mechanism which weakens the image, but it shows that you are thinking about balance.
In my opinion, this would have been a better image had you not included the rock and just shot a tight portrait of her silhouette. I know you're going for landscape, but using a person in the image at this scale makes it something else.
Again, the image is underexposed, but the white balance although very very warm and strange, kind of works here. With this specific composition, I'd like to see less ground at the bottom, and more room above her head. She's pretty cramped. Maybe take advantage of that "big sky" with a wider angle and isolate her more?
Keep shooting!