Size and distance have to be understood carefully. If the wall is huge and located outdoors on a road, the area from which it can be viewed is more. This opens a possibility that the visual can be more bold and bigger, with fewer details. It could also be created in a way where the entire visual should be visible only when viewed from a distance. But indoors, one has to consider the lighting the architectural elements, since the area for viewing is lesser, the visual could be bold, but could have some details.

Fig: Stick figure graffiti near Brick lane, Shoreditch, London. This area has been revived by wall painting / graffiti artists and now has a number of art galleries, shops, pubs and creative community activities.

Fig: This building in Long Island City, New York, USA is completely covered in graffiti.