The Eye

This is a graphite sketch or drawing of the eye ([link]) of one of the most beautiful women on DA - . I got this image from her stock account

It took me about 4 hours give or take using graphite pencils 2H through 6B. I'm very proud of this. I know it isn't exact and my technique sucks but it is probably the best sketch I have done to date. I have only been drawing since September so I'm very happy. I hope I did justice to her eye. Once I'm a bit more confident with my skills, I might attempt one of her full facial shots. She has the most amazing features and smooth skin. Give her a visit.

Any critique on how I might have improved this drawing would be much appreciated. I could really use the help