Pencil Portrait - Step 3

Please note that this isn’t a step-by-step guide on drawing a pencil portrait, but more about how and which steps I go first when I draw a realistic pencil portrait.
At first, I will start to draw outline of the facial features, hair, and head with a 2H pencil. I always put a blank and clean paper underneath my hand so that it won’t dirty my drawing.
Then, I start to draw the eyebrow of the left eye. After finished drawing the eyebrow, I go on drawing the iris with a 5B pencil, then only I start to draw from upper eyelid to lower eyelid and the skin under the left eye with 2B pencil. After finished drawing everything, I draw the eyelashes with a 5B pencil.