What are some good resources when it comes to learning drapery?

No.5856334 ViewReplyOriginalReport
I've been lurking here for a while and though there's some great recommendations for learning the other fundamentals, I've watched or read through most of them; but drapery is just so unpredictable it's driving me insane. What gives? Anyone know a good course on drapery and how to plan it out? Thanks.