First thing I did was change the lighting on the gravel to "Multiply", which made it opaque and easy to blend onto her skin. After adjusting the gravel to fit her, I used the pen tool to select both of her eyes and her lips. I adjusted the lighting again and used Ctrl+U to change the color from green to red. After this I changed the lighting on her face to "Soft light" and selected the brush tool. I used Crtl+U to change the hue again and began to change her hair color from brown to dark red.