In PS Mix, I was able to cut the top layer while seeing the exposed portion of the bottom layer(s), allowing me to cut the image to align perfectly with the underlying image as well as adjust color/contrast/etc to match. I can't find a way to toggle that view in PS Express. I can't imagine how it can be used effectively without. How do I match tone etc between the two if I can only see one at a time? Is there a way to do this that I'm not seeing?