Study basic anatomy of the muscle groups
Break the body into simple shapes first
Mark the major landmarks of the skeleton
Sketch the gesture and pose
Place the main muscle masses over the form
Use cylinders and ovals to build arms and legs
Show the chest, shoulders, back, and abdomen as connected forms
Keep muscles attached to bones correctly
Indicate muscle direction with contour lines
Add overlap between muscle groups
Define tension with sharper edges
Define relaxation with softer curves
Compare left and right sides for balance
Shade to show volume and separation
Refine the outline and remove construction lines