Pencil Portrait

Sharon, who I went to the portrait demo with, posted a picture of her sister on the Painting Friends forum.  I liked the look of the photo and fancied making a portrait.
Every now and then, I feel the need to flex my fingers with pencils - so a pencil portrait it is:

Sisterly Smile

Its not perfect, I can see a couple of improvements I could make, but they're minor and I'm reasonably happy with the overall effect :)