The realistic aspects are that he puts all of his strength into a mighty throw and the anatomy of his body. The aspect that is idealistic is his face; it is calm. This wouldn't be the case if he was actually throwing it.
Design scales are used to help artists
How am I supposed to understand that
The term silhouette describes when the subject is seen as a black shape, when outline that appears dark against a light background. The type of light that is necessary for silhouettes is bright light source. The silhouette <span>effect can be achieved with any kind of bright light source. The most commonly used source is the sunlight.
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He used pastel with gouache highlights on at least eight sheets of blue paper including one for the face glued on canvas on a sketcher.