I dressed some of my mannequins to study the drapery!
This is one of my weak points but I'm working to fix it!
if you are interested on patreon you can find the complete series and all the standard
and special reference sheets (more than 200 poses and various stuff) for $5 per month!
(or just the standard sheets for $1 per month).
The drapery effects on the first mannequin help, too