I love this - it's about the nocest, most natural and spontaneous pic on here and it beats me efforts into a cocked hat. Trouble is (no fault of yours) the light is flat and the composition is dynamic. I downloaded it and played with levels and shadows/highlights in photoshop and I think you could give it a bit more punch so that its dynamic range matches its dynamic composition. You might also try to either correct or exacerbate the barrel distortion on software. At the moment it's there, but not strongly enough to add anything. Just thoughts.