By placing lines at various distances from one another, the image gets more structure and gives the illusion of a body. A variation in width gives more dimension to the image and illustrates a sense of realism.
TSP Art Two hands, one loop From a distance, it appears that Adam's finger and God's finger have just broken contact. Yet from up close, it becomes apparent that they are connected. The entire picture is comprised of a single black loop.
Fashion Sketch - elegant fashion illustration of a model in a glam dress by Daina Cutulab. This is a very detailed sketch - It is clear that the artist started simple and with extra dominant lines has made quite a beautiful sketch.