I photographed Claire from Stars Model Management a while back. She's got an incredible look (as you can see above). She recently started modeling, but you can tell she's got something special.

When we photographed her, we kept the makeup to a minimum as to not hide the freckles. But when you photograph someone in soft light, the freckles get diminished. That's no fun! At first, I used some curves to darken the layer. The exact way you darken it is not important. Choose what you're most comfortable with. But this affected the whole image more than I wanted to. I needed to tone it down.

I added a layer mask, painted in just the areas I wanted to darken (the freckles), and left the rest alone. I used a soft brush to accomplish this.

Layer mask for only affecting certain parts of the image

After painting the areas to darken, her freckles added the depth to the image I was looking for.