This is a nicely composed and interesting shot. Have to say that the washed out sky, especially the left side, hurts it considerably. It pulls your eyes away from the real subject material. Cloning clouds with detail from the right side to cover the large white area on the left is an option. And recovering more detail overall with an hdr plug-in would make the cloning easier.
All due to unfortunate timing (time of day) with the lighting.