What are the basic principles of design sketch?

1, cultivate comprehensive performance ability, design sketch transforms and expresses the material form through the designer's observation, analysis, understanding and performance of the object;

2. Formal aesthetic ability. While studying the functional structure of form, design sketch explores the characteristics of form beauty, comprehensively analyzes the structure and modeling function of beauty, and extracts the elements of beauty to express beauty;

3. Cultivation of Creative Ability Creative ability is the guarantee of all arts and creativity. Design sketch expresses design ideas in the form of design language from the perspective of design;

4. Quick expression ability, design sketch shows the design idea on the plane. In the art training of college entrance examination, sketch is not only the basis of painting, but also the basis of design art. Design art is art first, so design must have artistic characteristics, namely image, color, composition and feeling, which are the basic elements of design art.