Hmm I don't know how valid my feedback is about anatomy, bc I'm quiet a beginner myself 🤔
To me the anatomy of the body already seems pretty good 😄
If you want to focus on sth than I would say do some more head studies, bc the face looks a bit flat and too stylized.
Besides that the hands on the back vies look a bit off.
I would love to give the solution, but honestly I don't know much myself 😅
So maybe someone else could help? ^.^
I like the color palette btw ^^