I don't recommend drawing from other people's art. It hardly helps you. Inspiration is fine, but as this is copied so similarly, it's obvious it's more than just that. The drawing is also kind of flat, especially the face.
Anatomy is always good to work on. Remember, before you can distort anatomy, you have to master it. You may think "I'll just draw anatomy and cartoons, so I don't need anatomy", but even for those you do need to know anatomy and drawing from life. They're the basics.