Tools: ordinary white cardboard, pencil, eraser.

1. First, observe the pose and proportion of the model as a whole, draw a general outline with long and short straight lines, and pay attention to the fluency and accuracy of the lines.

2. On the basis of the first step, the contours of eyes and hair are further refined, and their shapes and textures are represented by curves and arcs. Then draw the outline and structure of the body according to the proportion and posture of the model. When drawing the head, pay attention to the angle and perspective of the head, especially the shape of the eyes and eyelids.

When drawing the body and head, focus on the eyes. When drawing eyelids, we should pay attention to the thickness and shadow of eyelids and the contact point with eyeballs. When drawing the eye nucleus, we should pay attention to the transparency and depth changes of the eye nucleus, as well as the relative position with the eyelid.

4, face and neck as a shadow part, you can use a pencil to gently arrange the line to express their structure and shadow. Pay attention to the density and depth changes of lines when arranging cables to show the three-dimensional sense and layering.

5. Finally, after the overall modeling is completed, the shadow part of the hair is drawn according to the image characteristics of the model and the direction of light irradiation. When drawing hair, you should pay attention to the growth direction and fluffy feeling of hair, and also pay attention to the shape and depth of shadows.

Types of sketches

1, linear sketch:

Linear sketch is a sketch with lines as the main means of expression, emphasizing the outline and shape of objects, and expressing the characteristics and expressions of objects through the changes of line thickness, reality and straightness. Linear sketch pays attention to the use and expressive force of lines, and pursues concise and clear effects.

2, light and dark sketch:

Light-shade sketch is a kind of sketch type that shows the relationship between light and shade and the three-dimensional sense of objects. It expresses the shape and texture of an object by changing the hue of light and shadow. Light and shadow sketch pays attention to the expression of light and shadow and the contrast between light and shade, and pursues the effect of realism and three-dimensional effect.

3. Structural sketch:

Structure sketch is a sketch type whose main purpose is to express the internal structure of objects, and it pays attention to the structural characteristics of objects such as outline, proportion and perspective. Structure sketch usually presents the internal structure of an object in the form of lines and geometric figures, in pursuit of accurate and scientific performance.

4, freehand brushwork sketch:

Freehand sketch is a kind of sketch type that pays attention to the painter's subjective feelings and emotions. It does not stick to the description of the details of the object, but pursues the expressive force and artistic conception of the whole picture. Freehand sketch usually expresses the painter's emotion and artistic language with concise lines and generalized expression techniques.

5, creative sketch:

Creative sketch is a kind of sketch type with creativity and imagination as the main means of expression. Not limited to the description of objective things, but the pursuit of expressing artists' creativity and ideas through sketches. Creative sketch usually uses exaggeration, deformation, reorganization and other methods to combine reality with imagination, showing a unique artistic style and form.