Step 4 – Blend the layer
Right-mouse click on the top layer then choose Blending Options.
While holding down the Alt key, drag the white input slider in the Underlying Layer setting towards the left. Click OK when done. If you are working on an image with a dark background, you may have to adjust the black input slider instead.
Here’s what our image looks like after the adjustment.
Step 5 – Create a new layer
In the Layers palette, click on the button to create a new layer.
Step 6 – Blend the layer
Right click on the current layer then choose Blending Options.
While holding down the Alt key, drag the white input slider from the Underlying Layer settings towards the left. You won’t see any effect yet but this will help us preview the final results when we add color to the image in the next step.