I have shown you the three basic elements, now's the time to explore them. Let's express the gesture of the stroke with short cross lines. I will work with the technical pencil using to be for the hair and H for the face. I will use only short cross lines with gaps in between for the light zone, I will not use much pressure and for the shadow zone, I will use much pressure and repeat them one above the other. I will set the outlines of the face in work mostly partial. The hand is not in the air, like in the first three examples but onto paper.

As usual, I do pickin in the shadows zone looking for a forum in core shadow. Keep in mind, no matter what kind of creative method you use, you do begin always in the shadow zone of the object looking to work out the form core and cast shadow, the light zone, you let as a final step, here for example, there will be no need at all of working on the light zone, because the fine transitions are not important in this manner of creation. The emphasize in this manner is on the construction. If you like to accentuate on form, this is a perfect manner to work like that. With construction I mean the anatomy of the face. The reference photo isn't good for this example, because it has only soft light and soft forms.

I have to imagine for example, the anatomy of the nose to make it looks like that. But if you're a beginner, I do recommend to have a different photo. Much favorable is one with sharp light. That means much contrast and more expressiveness in the outlines of the face. There is no problem to use a razor It's finished now these sharp lines transmits knowledge of the form and are perfect for emphasizing the construction.