@Watercolour Okay cool, that helps a lot I had to do a quick re draw of the critique.
You have a very slim figure here doing a very subtle and therefore very difficult twist. Let me post a draw over with notes here regarding the anatomy rhythm abstractions you can use in your figures for simple anime styles perhaps.
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Now the more advanced part is having drapery contours wrinkle and fold around the figure. You seem to have a decent enough knowledge of landmarks of bones and muscles to perhaps pull this off. You have to imagine or add to the abstraction the contours that are going to represent the landmarks of human anatomy that we recognize. Here's an example.
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Trying to get better at my handwriting in these.
Now as an American I am contractually obligated to eat stupid amounts of turkey today. Good luck and keep posting. We can keep the critique rolling if you have more questions or run into trouble. Check out some of my critiques in other posts, they may have other tips for your journey.