Working on cat drawings, Otomi creates their eyes to look as shiny as marbles. He carefully draws the lightly colored eyes on special paper. Otomi relies on colored pencils in as many as 120 hues ...

The Psychology of Children's Drawings: from the First Stroke to the Coloured Drawing. Helga. Eng. By. Translated by H. Stafford Hatfield. (International Library of Psychology, Philosophy and ...