I used Steadtler Mars Lumograph pencils. Also used graphite powder, and a Tombow mono zer eraser,as well as a kneaded eraser.

Left part done, right side mostly in sketch lines

Right side eye worked out, as well as the skin under the eye. The highlights are erased out

Forehead done, with a brush smeared out some graphite, drawn some pores, the white highlights are erased again

Finished. I hop you like this one. Cheers, Hanzz