Masked images placed on background
In the above image, I have masked out the images and placed them
together on a background. (Read on for some time-saving tips on masking.)
The key to this technique is selecting one of the images as your target, and
then matching the other two images to the tone and lighting of this target.
Out of the three images, I like the colors, tones and contrast in figure 1 the
most, so I’ve chosen it as our target.
Throughout this article, you will see that I am using Smart Objects. This is
an excellent habit to get into when starting any Photoshop workflow. Smart
Objects allow us to perform non-destructive transformations on a layer, as
well as non-destructive filtering.