You're not suppose to have a flower as the subject of your shot :) Just kidding :)
Seriously, I am bothered by the angle... I think you would have had a better shot if the shadows were straighter and maybe if possible, if the bottom could have been closer to the feet.... I think portrait layout would have suited this best.
It's a nice sentiment but the photo itself is somewhat bland. I think it would have worked better if there were things other than grass, even at the edges.
I love this concept. I wonder if it would be more effective for the challenge purposes had you used a bed of flowers instead of just a lawn. In any case, I do like it.