Step 1
I draw the outline of the eye using an H pencil.
Here is a tutorial on how to draw an eye.
Since I have all the versatile degrees of graphite available (from 9B to 9H), I use several pencils in this tutorial but you can limit the number of pencils to 3 (HB; 2H for lightest areas and 2B for the darkest ones) or even just one if you play with the pressure on your pencil according to the tones you want to get.
I draw the outline of the eye using an H pencil.
I place the main shadows using an HB pencil and then I blend. I accentuate the eyelid with a 2B pencil and then I blend.
Inside the iris, I place a little space which will remain white, then I make little pencil strokes with a well sharpened 3B pencil, I re-draw the upper outline of the eye and then I place a little shadow right below.
I color in the iris using a 2H pencil (being careful not to cover the little space created in the previous step) and then I blend.
With a 3B pencil, I color in the pupil and I draw again the outline of the iris. Using Blu-Tack (or an eraser), I create lighter areas in the iris.
Using a 7H pencil, I color in the lower outline of the eye. Using an HB pencil, I draw the corners of the eye and I adjust the shadows around the eye.
I color in the “white” of the eye using a 7H pencil both in the corners and under the eyelid, and then I color in what’s left using a 9H pencil. Using Blu-Tack, I create little white areas to make the white of the eye “shine”. And at the end, I draw the eye lashes using a well-sharpened 3B pencil.