Sketches have been the backbone of any oil painting or watercolor. They stand on their own with the strength of contrast and depth, precise lines and shading.
Here are a few of Brenda's sketches.

Of all the art tools a pencil is always available. Most of my work in drawings has been about faces. The accuracy and detail is completely controllable and defined. The detail work I love is easily mastered with simple pencil or charcoal mediums.