I love the barn #2 is really nice because the barn takes up more % of the picture. Try cropping out the tree on the left see if you like it. Its a bit distracting and takes your eye from the leading line of the fence and trees coming from the right
Overall, a nice series of shots. Like the last one. Suggestion: move closer to the fence and drop lower to capture the barn as this may give a better foreground for your excellent background.