create a lifelike render of this covered horse arena maintaining the existing roof structure proportions and open sides exactly as shown under the cover keep a realistic sand riding surface with subtle texture add post and rail fencing around the arena and along the boundary to clearly define the riding space outside the arena include tidy rural landscaping with grass low shrubs and a few trees to give a well kept country property feel add a horse float parked near the arena and a couple of horses one in the arena and one near the float for scale and context use natural daylight soft shadows and realistic materials while keeping the building design true to the original image
