Seems like you're putting in a lot of work into doing something incredibly complicated. I commend you for pushing yourself but it's also important to take baby steps and improve upon what you already know as well.
I'm pretty sure there's plenty of books at your local public library about figure drawing that would help improve your anatomical skills. I would also recommend looking at what other artists do and try to identify their lazy parts or how they manage expression.
For example
Jaiden animations throws out the rule of thirds in favor of using color to attract the eye
Let me explain studios shows more serious emotions by making more anatomically correct hands.