#1: Well composed, but the colors seem a bit thrown off from the direct sunlight. I don't think it looks bad, though.
#2: I love the composition, etc, but the clouds/sky looks like it's been messed with in PP, and doesn't look natural.
#3: What's the subject? The idea is cool, but it doesn't really work in this case, because the subject seems to be the most boring, and least-distinguisable thing in the frame, i.e., that dead piece of brush.