As a suggestion, try taking the image into Photoshop (assuming you have it), and in the Hue/Saturation adjustments, take the yellow channel hue and saturation to the right a little (may 10 pts) and bright the lightness down a bit (10-20 pts) to give the yellows more of a darker, richer green look, and bring the red saturation up just a little. (4)
too bad you couldn't of shot this at another time of day, when the sun highlighted the building instead of the grass. If it was cropped in more to the building under these conditions (and lit for that) ....
Very nice composition on this shot. I love the contrast of the bright green against the tattered building. The sunlight against the grass is somewhat distracting though. Perhaps with a touch of tweaking?