Detail placement

People organise visual elements in categories and group them into larger shapes, based on their proximity to each other. The Gestalt theory of visual perception has derived a series of rules from this premise. An open area or a barely suggested object will be “autocompleted” by the viewer, as long as its shape is recognised as a whole. This is why it’s not necessary to polish every detail or worry about perfect edges – just ensure that the main shape is readable from a distance.