Interesting sky and tree, but the composition doesn't work for me. There is not enough ground for my taste, and there's not enough negative space to the right of the tree. You really should have cloned out the power lines, they really spoil the shot. I love the colours in the sky on the horizon.
Very nice picture. The line of trees on the horizon really adds interest and so does the unusual cloud pattern in the sky. About the only distracting thing at all is the power lines, it's too bad there are so many of them around - it's almost impossible to get a picture without power lines anymore.