Layer blending modes are always worthy of some experimentation when glamour compositing. An image of my friend Anne was given a layer mask and then a separate layer of just Anne (with no layer mask) was created above the layer with the mask. Notice the shadows on the grey seamless:
Between these two layers I created a new blank layer, and filled it with a color sampled from a light area of her dress:
Changing the blending model of this color layer from Normal to Soft Light not only darkens it but also allows the original shadow to show through:
Since the right side of the image is brighter, I wanted to place a brighter color in that area. I created a new blank layer, drew a large circle with the Elliptical Marquee Tool, and filled it with orange, and deselected it:
Now let us give the circle the mandatory 1,000 pixel Gaussian Blur:
Just for fun, I tried changing the blend mode of this orange layer. The easy way to cycle through these layer blending modes is to select the Move Tool (V) and repeatedly press the "+" key. I liked the Divide blending mode. Here is the result:
I like this version the best. The orange changed into a violet color that is also in the color palette of the dress and the solid background. It is always worth testing these blending modes. Sometimes the effects are quite artistic!