The first impression I had was that the green fog fading was too abrupt in contrast with how visible is the last tree before the fog so that definetly flattens it, also I know on the center is supposed to be a tree behind in the fog but to me it looks like the shadow from the last tree before the fog projected on a green wall (adds strenght to the flattening effect), that combo-ed with the spotlight kind of light coming from the top, it kind of make it seems like a setup from theatre stage in my opinion. I like the colors in that gem and the characters