|This Photoshop tutorial explains how to place a plane in some
clouds and how to create the illusion of depth. Later in this
tutorial we're going to use this plane to create a short
animation in ImageReady.| 1. Add plane and create the proper
mask You can save this image by click right clicking on it and
selecting (in Windows that is) Save Image/Picture As... Open the
image in Photoshop. Open the channels palette. Since we're
working in RGB, we will see three channels; (R)ed , (G)reen and
(B)lue. Notice when you click on the red channel that it has a
lot of contrast between the sky and the clouds. This means that
this channel is a great candidate to be used as a mask later on
(you'll figure out soon what I mean). So with the red channel
active (click on it once), go to the menu and choose Select /
All (shortcut Ctrl + A or Command + A on the Mac). Continue by
choosing in the menu Edit / Copy (shortcut Ctrl + C or Command +
C on the Mac). This will place the content of our red channel on
the clipboard. Needles