Painting Drapery

The most challenging subject for me to paint is drapery.  If I had studied in a classical atelier, I would have had months of study and practice of painting cloth.  Alas, being self taught, its the one thing I ignored, thinking it a boreing subject.  Not So!!!!   Again, if it seems too complex, I make myself focus on just the form and getting the folds and creases into position.  Then I go back and take a small part at a time, and really get into refining it  until I have convincing fabric.