Here is a female torso sculpture exercise, accompanied by step-by-step photos and an instructional video. For the exercise and understanding of the anatomy, use the diagram of the proportions of the human body.
Proportions of the human body Betzfar - a house for studying
The Art and Science of Figure Drawing: Learn to Observe, Analyze
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Sculpture Learning: Male model - figurative sculpting exercise #1
How to Sculpt a Female Torso It's time to sculpt a female torso
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Male Torso Sculpture study demo
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Relief sculpting method Betzfar - a house for studying painting
A woman's body sculpting exercise Betzfar - a house for studying
Modelling and Sculpting the Figure: : Russell, Tanya