Colour block in
I add some colours using big soft brushes and different layer modes. Multiply and Color Dodge help to push the sense of light. I further establish the sense of light and materials and group together different elements. By keeping the value range on different materials separate, the darkest areas on skin won’t be as dark as the lightest areas on a matt black cloth, for example.
Pushing the light
I love the Color Dodge layer mode. You can use it with big soft brushes and saturated colours to quickly paint in bright light sources. I settle on having direct light coming from above left as well as a general ambient light on the face. I keep changing my mind and experimenting with the design of her outfit. I wouldn’t recommend this: it can get very frustrating!