Jostein, this is an excellent composition with good use of fast shutter speed to isolate movement. Looks like you've attempted some gaussian blur, which is effective, but has created a halo effect around your main subject. As such, I'd suggest toning down the blur. I'd also suggest some tweaking for contrast as it appears a bit muddy on this end. Some more work and you'll have a winner.
I like this photo. Very original. Nice composition. I like the way the the bales in the distance really help to add depth. The sky appears very vast. Thought provoking. Nice Work.