Hey matt

One thing that, to me, sticks out (sorry about the pun) is the tree at the back, it looks a bit to "Square" rarther than rounded and also looks like it might be still alive, but in winter, so to speak.

Maybe add some decay to it, broken limbs, bit of rot etc???

Also I think that a nice bit of DOF would really bring out the pump as the main focus, but you would might have to be carefull not to loose some of the details in the rest of the scene.

Cheers