pencil sketch "protrait"

Greetings all.i want to share with you my pencil sketch protrait.
It was my commission work.Although it feels good to me after the old work.
Pencil is a very popular medium for drawing.There are different graphite pencils here HB,2B,3B,4B,6B. The graphite of 6B pencils much dark then HB pencil.Good for pencil sketches slowly advancing And it is better to go from light to dark. It is very important to have tone variation.