The composition, lighting, formal values are all excellent. The only thing that bothers me somewhat are the background trees (left center), which somehow look a bit unreal. Otherwise, it's a fine image, with the foreground wagon very appealing.
Nice picture, almost looks like a painting. For me the action is mostly at the upper left corner, so some way you'll have to make it intresting. But I really think you have done some great compositioning whit the wagon in front, so no cropping for me! Greets Tim