Drawing and coloring pictures can be fun, but turning the colors you pictured in your head into reality can be more difficult than you would think. Although not every artwork has been preceded by a drawing in the form of a preliminary sketch, drawing is in effect the basis of all visual arts. Often the drawing is absorbed by the completed work or destroyed in the course of completion. Thus, the usefulness of a ground plan drawing of a building that is to be erected decreases as the building goes up. Similarly, points and lines marked on a raw stone block represent auxiliary drawings for the sculpture that will be hewn out of the material. Essentially, every painting or coloring is built up of lines and pre-sketched in its main contours; only as the work proceeds is it consolidated into colored surfaces. As shown by an increasing number of findings and investigations, drawings form the material basis of mural, panel, and coloring book. Such preliminary sketches may merely indicate the...
