#1: great shot as is, nice foreground and background. the sky is also not just plain and boring.
#2: looks like two shots stitched together, the dock looks out of place or out of focus. the sky seems bland and mono tone, same for the ridge line. It would be alot better with something else in the picture as a focal point.
#3: amazing shot, i would have taken less of the trunk and moved the camera to the left.