To give depth to a text in an image we use the Drop Shadow layer style. But to create a realistic cast shadow effect for objects, persons, the standard Drop Shadow just doesn’t cut it.

How to Draw a Shadow of a Person in Photoshop?
--- To draw a shadow of a person in Photoshop, first we have to duplicate the layer.
--- After that, we have to transform/distort the image to create the realistic shadow in perspective.
--- Add a black Color Overlay or use a gradient shadow (#000000 with opacity 100% and #000000 with opacity 70%). Reducing the opacity of this layer and adding a Gaussian Blur effect also help create a real shadow.

This action set contains 6 Photoshop actions for creating shadow effect:
--- 2 actions for cast shadow of a person (direction left or right)
--- 1 action for drop shadow effect used for text
--- 3 actions for material design shadow in Photoshop; use these actions for box shadow