&lt;p&gt;&lt;span style=&quot;&quot;&gt;However, forms don’t have to be three-dimensional shapes. They can also be implied through illustration, using techniques like light, shadow, and perspective to create the illusion of depth.&lt;/span&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;&lt;span style=&quot;&quot;&gt;&lt;span style=&quot;&quot;&gt;In two-dimensional design, form makes realism possible. Without it, renderings like the image below—a ball with highlights and shading—simply wouldn’t be the same.&lt;/span&gt;&lt;br&gt;&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span style=&quot;&quot;&gt;&lt;span style=&quot;&quot;&gt;&lt;span style=&quot;&quot;&gt;Even images that are less realistic use similar techniques to create dimension. Below, the lighting and shading are stylized, but still hint at form and depth.&lt;/span&gt;&lt;br&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span style=&quot;&quot;&gt;&lt;span style=&quot;&quot;&gt;&lt;span style=&quot;&quot;&gt;&lt;span style=&quot;&quot;&gt;In everyday composition, the purpose of form is the same, but on a smaller scale. For example, a simple shadow can create the illusion of layers or give an object a sense of place.&lt;/span&gt;&lt;br&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span style=&quot;&quot;&gt;&lt;span style=&quot;&quot;&gt;&lt;span style=&quot;&quot;&gt;&lt;span style=&quot;&quot;&gt;&lt;span style=&quot;&quot;&gt;Basic forms can bring a touch of realism to your work, which is a powerful tool when used in moderation.&lt;/span&gt;&lt;br&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;