Charcoal and Pencil: Seek Forward

Here is the Final look of the eye!
( Okay! I know! The eye I drew did look a little different from the reference and that because since it is in charcoal, it will leave a gray part on it if i try to erase them so it better to leave thing up there for now...!)
the size of the eye is about 3 in by 3 in.

All of Art Material:  2 HB pencil ( sharpest point and "not too sharp" point), eraser stick(erasing tiny detail), brush(cleaning eraser dust), scalpel (skin detail),  the pen (it's no longer work! and I use this to deal with the wrinkle part!), 2B charcoal Pencil(darker area of the eye), paper tissue ( soft blending), paper towel (rough blending), index card (for testing, shading, and protect my hand from smudge my artwork), 1 (11 x 8.5 in) Pacon Sketch Diary Paper, ruler.

Time total: 2 hour and 57 minutes

Step by Step:

   

Reference: 
eye stock

This realistic eye artwork teach me one lesson:
have someone look for any obvious error before posting the final piece of artwork.