Now let’s add a photo: buy the image from Shutterstock at tinyurl.com/l3netx, or use a similar photo of your own. Then use the Pen tool (P) to create a path to extract the man from the background. Convert the path to a selection by holding Cmd/Ctrl and clicking on the thumbnail of the path.
Duplicate the image onto a new layer and use a big, soft brush to erase part of the arm, painting over the mask. Name this new layer ‘model arm’, and the initial layer ‘model’.
Duplicate the ‘model arm’ layer and go to Filter > Others > High Pass. Set the radius to 10 pixels, and the blending mode to Hard Light.