In this drawing, the lines are free, fluid, and dynamic, shaped more by changing the direction and pressure of the pencil than by closed, definitive contours.
The linework has a sketch-like feel and is layered on top of each other, which helps create a sense of movement and life in the form.
The variety of line rhythms, from thin, light lines to darker lines, separates levels and creates depth. The use of broken and curved lines together forms the overall structure and indicates an expressive and observation-oriented approach to design.