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2. Color superposition method (mixed color method): draw one color first, then draw another color on it, and the two colors are mixed with each other. After rubbing back and forth, it produces a natural transition and a soft effect. The whole color can be mixed, and the connecting parts between colors can also be mixed. It is best to paint the upper and lower colors in the same direction. The general rule of painting is to superimpose dark color on light color, or to superimpose light color on dark color. Beginners should practice with the same cold and warm colors. Contrast colors, such as red and green, yellow and purple, blue and orange, are easy to produce dirty colors after being superimposed on each other, so beginners should not use them too much. For children who have been studying painting for a long time, they have a further feeling of color. After mastering certain knowledge of color harmony, they can boldly apply it to sketch painting.
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3. Color juxtaposition method (pointillism): The lines and points drawn by oil pastels of different colors are placed side by side in the picture, which makes the color of the picture more varied, and its effect is similar to the pointillism used by European impressionists. Although this method takes time, it can temper children's will and cultivate their good habits of patience, carefulness and carefulness. In children's paintings, it is especially suitable to show the background of grass, sky and painting. The juxtaposition of dotted lines should be as dense as possible, leaving no gaps. You can also use the expression from dense to sparse.
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4. Color gradient method: In the same color, two colors are rubbed back and forth at the junction and painted several times, which can make the colors blend with each other and make a natural transition. On the basis of one or two colors, adding some other colors appropriately can make the objects in the picture have a certain three-dimensional sense and a sense of space. The natural change between colors enriches the expressive force of children's paintings and makes the objects on the screen more realistic. For example, when an apple turns from green to yellow, the changes in the depth of petals and leaves can be expressed by progressive painting.
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Scraping method: the fritters scraping method refers to evenly coating one or more layers of fritters on white paper or colored paper. According to the needs of modeling and picture, use bamboo chopsticks, knives, toothpicks, combs and other hard objects to ghostwrite, and hang the color of the performance part to reveal the background color. Through the expression of points, lines and surfaces, the picture has special effects that ordinary painting materials such as watercolor and gouache can't express.
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Rubbing method: Oil painting stick rubbings need plate making, and plate making methods such as cutting, engraving, tearing, collage, folding and rubbing paper are used to show various effects.