Started the session by using graphite to sketch out the basic form of the model.
Then as a sheet was draped over the shoulder, I worked in charcoal to capture the texture of the material.
Another pose, included the model seated draped again in material, as my drawing didn't fill the space, I sketched the room lightly behind. To try to get the transparency of the material, I added emulsion roughly to veil my marks and adding layers. I feel this worked well.