@Gary-Wilkinson Hmmm... interesting dilemma. I do like the feel of the yellow one more (personal pref because I love yellow and limited color schemes), BUT the green background does help the kid pop more (I also like the lighting). I think my problem with the green one is the red box; because of the contrast with the green, I feel like it's trying to compete for the viewer's attention.
Unless the box has to be red for any reason, I personally would go with the green background but make the box a cool or more desaturated color, so the warm colors are primarily on the kid's face/skin.
Regardless of choice, adorable picture!