This is my favorite of yours. I think we all have a "place" that we can retreat to and call our own. I like the pose as well. I don't recall if this was basic or advanced, but this shot might be fun to try selective desaturation on everything except the person. The rest in b/w? I am suprised this one didn't finish higher in the challenge.
Nice formations in the dirt...gives interest to the pic. I like the figure and it's placement. I would maybe suggest bumping up some of the saturation or playing with the levels to get the colors to pop just a little bit more.