Next time definitely do some exposure bracketing - these pics look underexposed and that's because fog\mist tricks the metering system - so you want to try maybe a +/- 1 stop for each pic.
Pic 1 -lots of potential - I like the graphic quality of the fence posts and stumps - I think that if you shot them as the focal point \ subject at an angle, it would look a lot better - instead of them being at the same distance, I would have moved to the left, pretty close to the fence, and shot down that line - mayne focusing on the tree.
Pic 2 - the tree branch coming in from the top left is in focus, the barn is out of focus - I assume that wasn't intentional - I would have shot the barn in focus, and branch either out of focus, or out of the frame all together
Pic 3 - is the sky had some interesting clouds or colors, okay - but there's nothing there - pay attention to that next time - crop out boring skies if you can - and try your hardest to get a boring \ bland sky out of the composition - that pic would look real good if it was framed tighter, and 1 stop brighter.
Just keep shooting - takes a while till you get to the next "plateau".
