great action - love how you can see all those long hairs of the coat, and the flying mane. The whole background is very distracting - the hat the leg. Maybe you could have included the person in front - giving the horse a "space to jump into."
Excellent timing. It's too bad about the leg in the bottom right. A smaller aperture (larger number) would have blurred the background giving the photo more impact.
Not exactly sure this meets the challenge as no one is riding the horse, but still, good capture of horse jump...just a bit distracted by the cut off human bodies in the lower right and left behind the rump of the horse. I also think you did a very good job of exposure as you maintained good detail in the horse despite a fast shutter speed to freeze the action. Also think the crop is a little tight here, especially near the snout of the horse. Would have preferred a wider format.
Kind of a stretch for transportation since no one is riding her, but not a bad photo. The fake flowers and partly viewed cowboys are distracting. I don't mind your border though and your image is nice and clear.