Positive, Negative, Plane and Volume

Here are three gesture drawings to start out the week.

Here is a positive space drawing.

My wife's ergonomic office chair and my daughter's chair

contour-line positive space, extra-fine ink

Here is the same image, using negative space.

Negative space, charcoal

Original still-life set up.

The contour-line drawing.

Mixing it up with the blue sharpie

2 value drawings showing plane and volume.

Conte crayon

Charcoal