Man and girl deselected and very roughly placed in the image.
step 4 of 6
Girl's arm "amputated" and replaced in a more suitable position for her predicament. (Sadly I do not have the use of the puppet tool - YET!) Boulder selected and placed in centre so that it appears that the girlis under it, and the man behind it.
step 5 of 6
Boulder, male and female in place.
step 6 of 6
Background desaturated and gradients applied. Image completed.