First saying, this is AMAZING! The color looks like it's actually that person has that green eye! I really love this piece! It's very original because I don't see many people do this, it's technique is beautiful and creative, finally the vision of this piece blows me away! It makes you focus on just the center of the eye, and nothing else (because the grey outline really adds that extra touch) Personally, I love this art, its original, the vision is amazing and technique couldn't be better. One more thought, before I wrap up the critique, How did you make this piece?