Here are a few wip images of the Jolie portrait. I used a b and H pencil for most of the mid tones and for all the darkest areas I used a 3b mechanical and 3b wood pencil. For blending I used a stump and plain tissue. The white of the paper was left behind for the eyes, lip HL's and the tip of her nose, all other areas have some graphite.
In the first image you can see I chopped a photo of Jolie and placed a grid on the computer image. I then drew in a 2 inch grid on my drawing paper, then a light outline. 2nd image is a better look of the photo with grid. 3rd image I decided to work on the mouth first, her lips have a very unique look and were interesting to draw. In the 4th image I lightened the lips then worked on the eye and started to build up tones on the face...the paper did not take very well to layers, and the texture of this cold press is not natural looking. 5th image I darkened the lips again and built up some skin tones, the hair was done in 3 layers of 3b. Final image is of the finished portrait, the reference didn't have a lot of contrast so I put some in myself.