Utilising pens of varying sizes is essential for creating depth and building texture within a doodle. Thicker pens can boldly lay down foundational lines and shapes, adding weight and presence to the overarching composition, while finer pens introduce intricate details that invite the eye to explore. This interplay between heavy and light strokes reinforces a sense of dimension, allowing elements to recede into the background or leap forward with vibrancy. The contrast not only enhances visual interest but also evokes an emotional response, transforming a simple doodle into a rich tapestry of experience and engagement.

One you start to see how the relationship with each circle builds, you can then begin to see the doodle develop into a form.