Quote (Newlander @ Mon, Feb 11 2008, 06:37pm)
After you make the duplicate, on your layers window, there should be 2 layers (Background and Background Copy).
Choose the background copy and double click it.
It should bring up a new window labeled 'Layer Style'.
There's a drop-down menu at the top labeled 'Blend Mode'.
Drop it down and find 'Screen'.
ty very easy instructions