looks to me like it's slightly under exposed. I think may also need softer and more even light. That shot looks like it was taken in direct sunlight, or hard light. Maybe wait for just after a rain, or make your own on a slighty over cast day. You need the shadows but maybe some moisture and a little softer light from a thin overcast day, or a skrim, may help.

I PS'd it bit but there's nothing like getting the photo you want straight from the camera.. .

What camera, what settings?

I like the composition.