The flower girl at Karen and Dean's wedding was very beautiful but very shy. I tried my ususal (typically successful) strategies to get a good expression from her but to no avail. When I gave up and took my eye from the camera I saw this beautiful vision - her shoe against the wedding dress.
Why does this image work so well? Simplicity! Simple light, simple background and simple subject. The light is soft as it is diffuisng through the tent that is keeping the bridal party comfortable as they await the ceremony. The background is simple - just the wedding dress - but also appropriate. If I had used the white tent as the background the photo would have much less meaning. And what could be simpler than a child's shoe.
But what makes the photo so impactful is the "high key" composition. That is what photographers call an image that consists of mostly light values. The high key composition allows the red details to pop out!