Fantastic image...I would for sure crop the top off for more drama and the focus would be on the rider and the storm bearing down overhead. The white light on the top takes away from the intended drama...just my two cents...I still love your image! zNice capture!!
Seems to be a bit of curve to the horizon that could use some straightening. there's a lot of detail in the distance, but it could use being nearer, I think. I'm not totally sure why, but my eye is being drawn to the foreground instead of the storm above. maybe that's the issue, several subjects competing for my attention.