Preparing for studio shots

I am looking at lighting techniques in preparation for my studio shots. I need to decide how to illuminate my models and how to change the 'look' of the photograph through lighting techniques.

This image gives me a good idea as to where I should place my lighting. I can see here that the face is very well lit, however so its the side of the models body.

This is a basic light set up used to create a professional style portrait. M is the main light and is the most powerful, it is used to light the model and create mood. F is the fill in light. This light softens the shadows, the usual ratio of main light to fill in is 1:2 to 1:9. B1, B2 and H are all optional lights. B1 is the background light, its use is to remove the shadows from the backdrop and also illuminate the models head from the background to give the 3D feel. B2 is the other background light. This light creates a 'hallo' around the models head, and is more often used for women as there hair has different shapes so the light adds some 'air' to it. Finally H is the hair light, this light is generally used to either enlighten the hair or also to create an accent light. This will create a highlight on the shoulder to give more depth.