The sunlight gives this a nice "memory" kind of a feeling, that is what strikes me first about the piece. The placement and the focus is well thought out, and I love the subject. The background is soft and doesn't distract from the focus, and the two clusters on the right help balance the focus clusters.
The feeling of light, airy, rick greens at the top of the image to the deeper, darker shadowy parts are amazing. It helps the whole piece feel nostalgic, like a summer morning when I was a kid growing up.