6. When you’re satisfied with the rotation, click the Commit Puppet Warp button ( ) in the
options bar, or press Enter or Return.7. Save your work so far.Using an alpha channel to create a shadow
Just as different information in an image is stored on different layers, channels also let you
access specific kinds of information. Alpha channels store selections as grayscale images. Color
information channels store information about each color in an image; for example, an RGB
image automatically has red, green, blue, and composite channels.