1. The apples in the sketch are somewhat different from those in real life, but they are also somewhat different. To give an apple a hue of black, white and gray, we must first understand the apple as a sphere. The performance of the dividing line between light and dark on the apple is similar to the principle of the dividing line between light and dark on the sphere.
2. Draw an apple bisecting center line on white paper, and determine the highest and lowest points of the apple with short lines. Draw an apple bisecting center line on white paper, and determine the highest and lowest points of the apple with short lines.
3. According to the direction of the light source, draw the dark part and projection of the apple with a hard pencil. The pedicle above the apple is concave, and the dark part is determined according to the direction of the light source. When drawing a structure at first, emphasize shadows with lines.
4. Set a tone on the dark side and separate it from the bright side. Distinguish the dark side with the intersection of light and shade and projection emphasis. Then draw a gray surface, which can also be divided into dark gray and light gray. Large surface area, use an eraser to draw a small piece at the highlight. At this time, the dark side should be aggravated in turn to coordinate the contrast of black, white and gray.
Artistic feature
Sketch is a kind of monochrome painting, using charcoal pen, pencil, pen and so on. Used to draw light and dark objects with lines. Monochrome watercolors and monochromatic oil paintings can also be counted as sketches; China's traditional line drawing and ink painting can also be called sketch. Generally speaking, sketch diversification refers to pencil drawing and charcoal drawing. Sketch is the foundation of all painting, and it is a necessary stage to learn painting art.
Sketch usually uses methods that can leave traces on the plane: such as charcoal pen, pen, brush, ink, paper and so on. Outlines and lines are general terms for sketches. Sketch has a feeling of natural law. Different strokes create different lines, intersecting relationships and rhythms, active and passive surroundings, planes, volumes, tones and textures.
Sketch is a formal artistic creation, which uses monochrome lines to express things in the intuitive world, as well as ideas, concepts, attitudes, feelings, fantasies, symbols and even abstract forms. It does not pay attention to the whole and color like color painting, but to the structure and form.