In this picture I used a blue backlight to separate the subject from the background.
In this picture I put a gel in the backlight to see what effect different color backlights have on the picture.
In this picture I put a green gel in to bring out the green of her eyes. I also had her posed in a very soft and feminine pose.
In this photo the subject wanted a picture to be able to remember her blond hair since she was going back to her original brunette hair color. I used a hair light to accent her hair and a backlight to separate her from the background.