I'm really enjoying reading the thread- the links at the beginning and the explanations throughout will help folks long after the contest is over. Thought I'd share what I started with, and worked up to.
I have to say regarding spotlights- targeting exactly what you want takes practice, and hopefully folks remember to use dark colors too. (I thought of spotlights as light colored.)
Anyway, I posted the final render over in the contest thread, but here's what I worked up from. Point lights and spotlights and one distant light (all with different colors) brought it along. Thanks for all that you do, sharing information- you probably have many other lurkers!
Shown here is the scene before the additional lighting.
EDIT: In the final image, what took me the longest was getting the lit gleam in her eye. I wanted to draw attention to the eyes and that little spark of light took forever to manipulate without lighting other areas. A very teeny spotlight!
Click thumbnail to see full-size image