This is very good you improved a lot! Just one thing I would fix or work on are the pupils. I love the details of the scratch marks on Naruto's face and his facial expression. Another thing you might want to work on is the nose because it does'nt have a bridge/length of the nose. I love his hair and the choice of shading! The drawing is very detailed and when I first look at it I know it is Naruto! ^-^
Keep practicing and your drawing skills will be dangerous! lol. I could use more practicing myself... o3o Great drawing!!!