Page 182 - Photoshop for Lightroom Users – Scott Kelby 2nd Edition

Step Eight:
Changing the order of the layers in the Layers panel will also change how things look. And, if you choose different channels (Red, Green, Blue, instead of
the default Gray) from the Blend If pop-up menu, things will blend differently, yet. Here, I chose Red, and then dragged the sliders to get another look,
where the paper and the texture fade gently into the rest of the image. Again, remember that this is all about experimenting, getting creative, and trying new
things.