I can give you my 2 cents on each image. but just the thing I noticed.
Image #1, would have been stronger had you moved to the left and got the sun rays and cloud streams coming out of the space between the trees.
Image #2, I like the bridge, however lots of dead brush and trees make the rest of the shot uninteresting.
Image #3, Good use of the stream as a leading line, however it leads you nowhere.
Image #4, would be a great shot in the spring/summer, buildings against the green grass and trees. Move further to the left if possible to make the road and stream more of a leading line to the buildings. Try and remove the power lines and of course the fence.
Overall a good start, just really hard to make brown winter foliage pretty.