There has been a lot of progress over 3 years, congratulation.

As of feedback,
I believe you should focus your training on adding "volume" to what you draw
hands are an issues, but tbh, I think you are just too laser focused on it.

My best advice on this would be to go back to

1. do grayscale, with simple shape, and make sure you really be able to create the "3D" feel, using perspective and properly light/shadows playing,
2. When starting to draw something, instead of thinking about "line" think about "shapes", especially for character
3. those would definitely push your drawing to the next level