Need help to cast a shadow on snow.

Working on a project where a human shadow needs to be cast on a bed of snow. Grabbed the nodes for a snow texture from Blender Artists Forum and applied it to my scene. Everything looks good except the light is not casting a shadow on the snow. The image and Blend file is below. Hope someone can help me figure this out.

/uploads/default/original/3X/1/e/1e5490fca261fca572dbde9b67a9e30edab9dfd9.jpgd=1381508072&thumb=1

Click to Download Blender File

Please don’t make multiple threads for the same question.

CLOSED