Pen drawing is a form of art that uses a pen as the primary tool to create images. This technique can involve various types of pens, such as ballpoint, fountain, or ink pens, and can be used on different surfaces like paper or canvas. Artists often utilize pen drawing for its precision and ability to produce fine details, making it a popular choice for illustrations and sketches. The style of pen drawing can vary widely, from simple line art to intricate designs. Techniques such as hatching and cross-hatching are commonly employed to create shading and texture. Many artists, including Vincent van Gogh and Pablo Picasso, have used pen drawing to express their creativity and explore new artistic ideas.