you're really good at drawing eyes and hair. I love the movement in the lines of the hair and how the eyes really pop out and are so expressive. However I feel like there could be just a little bit more definition of the scarf and maybe the hand, especially around the wrist because from afar, it looks like the wrist/arm is really thin instead of covered by a piece of the scarf. Also I think more definition on the pinky finger would help it look more 3D/bent because the tip of the pinky doesn't really look like its farther away than the rest of the finger.
It's still an amazing drawing. I've seen those Copic Multiliners in action though I haven't used one. There great for making smooth, clean lines. I didn't know that they didn't smudge. I'll have to get some of those one day. I'm terrible at inking though, so I normally avoid doing that on drawings I don't want to mess up.