Segment 1: This article provides a step-by-step guide on how to draw and shade lips in pencil. The process involves creating a basic lip shape, adding details, and shading to add depth and realism.

Segment 2: Start by drawing a horizontal line for the mouth and then sketching the upper and lower lip curves. Next, refine the shape by adding a cupid's bow and defining the corners.

Segment 3: Add details like the natural creases, the indention between the lips, and the highlight lines. Use soft shading techniques to add depth and create a three-dimensional effect.

Segment 4: Pay attention to light and shadow to make the lips look realistic. Apply darker shades in the corners and creases, and use an eraser to lighten up the highlighted areas.

Segment 5: Finally, blend the shades and refine the details until you are satisfied with the result. By following these steps, you can draw and shade lips in pencil to create a realistic and lifelike drawing.