1, observe the object, tick off the main line, add lines and other details, draw lines with different shades according to the light and shade, and highlight the three-dimensional authenticity.

Line drawing-the main modeling method of Chinese painting. Line drawing is a method to express the volume, shape, texture, sense of quantity and movement of an object by using the brushwork of line weight, shade, thickness, reality and length. The features are concise and clear, which can describe various phenomena.

Commonly used tools are pencils, charcoal pens, charcoal sticks, pens, nylon pens, signature pens, markers and so on. Only by observing more will there be more painting languages. Vertical lines give people a sense of solemnity, elegance, hope and simplicity. When teaching children to draw line drawings, we should not expect too much. We should guide them to observe objects with their own eyes and express objects in their own ways according to their abilities at different ages, so that children's line drawing will naturally be very interesting.

2. In the process of painting, the lines that outline include curves, straight lines and broken lines, thick lines and thin lines, and solid lines and dotted lines. They are collectively referred to as "lines".

In our geometric concept, a line has length, direction and position, but no width. As a design and visual element, line not only has the same length, direction and position as the line in geometric concept, but also has certain width, dynamic and emotional concepts.

Theoretically, a line has only one dimension, but in practice, according to its related characteristics, the line can be relatively thick or thin, while still maintaining its basic length characteristics.