Observe as a whole and keep a certain distance from the object first. Our vision expands radially. The closer the viewpoint is to the object, the fewer actual blocks of the object in the field of view. Too close to the object will magnify the part, making it more difficult to move the line of sight out of the part. When outlining plaster from life, the viewpoint can be set beyond 3 times the height of the plaster image. Nanning Art School

In contrast, each part exists in the whole. Only by comparing one part with other parts can we reveal the true nature of this part. The reproduction of details can only be realized in the overall grasp.

Comparison is the magic weapon of observation. Comparison is to find out the difference of each part of an object through comparison, so that the relationship between the shape and size of the object, the distance from the space, the virtual and real edges, and the intensity of light and shadow is clear at a glance. We usually say that when drawing, we should "draw left and look right", which means comparison. When drawing, you must always look at each part of the picture with a contrasting eye to see the contrast between them. This kind of perceptual experience is particularly important for understanding the spatial relationship, the virtual reality relationship, and the light dark relationship, because without the former, it doesn't matter what the latter, it doesn't matter what the real is, it doesn't matter what the dark is, and it's difficult to have a reasonable conclusion without comparison. For example, if we use light and dark colors, theoretically there is usually only one black and white spot in plaster sketch. It is necessary to compare them with each other, especially the gray surface of the light color part, which changes subtly. Only by comparison can we sort and display rich levels. Nanning Art Secondary School

Grasping the form is the difficulty of writing plaster images, and the process of writing plaster images is the process of understanding the form. The shape is compared. When grasping the shape, the size proportion of each part of the plaster figure should be compared more. There are many methods of comparison, such as proportion method, coordinate method, form finding method, vertical line inspection method, etc. When teaching, we should be good at guiding students to comprehensively use these methods to compare shapes.

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