Using Value to Create Folds and Drapery
Value Creates Form
Great masters like Leonardo DaVinci made a habit of studying draping fabric and practicing this skill with different mediums. See the photos below and the weblink to view some of DaVinci's studies.
Notice the highlights in this one.
Look at the range of values used to create contrast.
See how strong contour lines help build the base to place the shading in.
At least one of these should be done in pencil, you may use pencil, colored pencil or pen for this assignment.
THIS MUST BE FROM DIRECT OBSERVATION. Lay out actual fabric (preferably without a pattern on it), light it and draw it. See the below handout for more detailed information.