Creating dimples on normal cheeks

Start by opening closeup of a face.
Create an elliptical selection using elliptical marquee tool. Press Alt+Ctrl+D to feather the selection. Press Ctrl+J to copy paste the selection in a new layer.
Double click the layer to open layer style window. Apply settings as shown.

Duplicate layer and place above the other cheek. Press Ctrl+T and rotate according to the face angle.
Change the layer mode to "Luminosity" for both the dimple layers.