Sketch of Jessica Hamby

Sketch of the portrait of Jessica Hamby ([link]) after nearly 4h

The sketch is the first and the most important step of the portrait. I need between 2 and 5h to do it, and I use a 2H graphite pencil, an eraser and a kneaded eraser.

The purpose of the sketch is to set the forms of the portraits, contrasts don't matter yet.