Initial: What a pleasant image to view. Purple/blue flowers amongst the green grass leading my eye to the trees that softly shade the old building. The light that dances along the side of the building.
Technical: Composition is done well. Time of day for lighting is good. Colors and focus are clear and bright. Exposure is good.
Overall: It has general appeal. My favorite part? The dancing light and the flowers. What would I do differently? I might attempt a slightly different angle. Maybe sepia or b&w.. but that would take away the lovely colors....so..
As far as meeting the challenge.. I don't like to comment on that because I am liberal about that. That said, I think it was a subtle "time" subject for most dpc'ers. I think this may have scored higher in a different kind of challenge.