This is an exceptional drawing. You have done a really great job in your art piece.The hair is perfect in every way. The facial features and glasses look really well too. In my humble opinion, I would blend the color on the arms a little more with clarity. Please dont get me wrong, it is a most beautiful drawing with such great details. The costume could use a little more blending too. See what you think. I would leave everything else alone...perfect! Very nice artistic work! <3