Study of a Nude with live model

This represents a seated woman with her head turned to her left, where the light comes from.
Her arms, which she keeps between her knees, are stretched downward.
The drawing is done in white CONDE pencil on gray paper, tinted in the mass.
The lines of the pencils show us only the parts touched by the light, leaving it to the viewer to finish the shapes of the body.

Study of the female nude in studio with  unprofessional live models
Or how to buy a nude by posing my self?