Pay attention to how you draw shadows.

1. Draw the shadow and dark surface levels within the light source projection line

2. Draw the shadow of the sketch:

In the final analysis, sketching is to capture the picture with brush strokes Find the "three sides" (bright side, gray side, dark side) and "five tones" (high light tone, bright side tone, gray side tone, dark side tone, reflective tone) of the shadow cast by light on the object. The painting process.

The tone for drawing geometric objects and still life is relatively simple. You only need to find the boundary between light and dark, see clearly where the light is reflected from the backlight, and distinguish it with black, white and gray.

Drawing facial features, plaster and portrait sketches are more complicated. The general principles are the same as geometry, but the tone is very easy at the beginning.

It looks very flat, which is a lack of understanding of the human body. Therefore, the solution is to compare the skull and muscle structure diagrams when drawing, and paint the tone along the direction of the muscles. Another very effective method is to copy excellent sketches and pay attention to how they treat each part when they adjust the tone. Processing, such as the treatment of cheekbones and mandibular muscles, the treatment of wrinkles in the elderly, the intersection of light and dark on the face and the treatment of black and white contrast, etc.

Before applying the tone, put some pencil on the area to be painted, and then use your hand or a brush to apply it according to the final shadow result (using your fingers directly can sometimes be greasy, so it is easy to smear the picture, so it is recommended to use a pad Toilet paper, the effect of wiping the gray surface with a pen is soft matte gray, the effect is better, it is recommended to use), so that you can roughly see the effect, save time in the process of arranging the lines later, and the tone that comes out can be even and detailed.

Since the shadow effect is roughly painted, it is much more convenient to arrange the lines. The advantage of applying gray tone is that it is fast, and the gray transition is natural and soft. The disadvantage is that it is too smooth and lacks volume and texture, so It is necessary to arrange the lines to create volume and texture. Before doing this, you need to do some wiring exercises. Beginners may not be able to arrange neat and orderly lines with appropriate grayscale at first. For line arrangement practice, it is best to select some still lifes for still life sketching, and the drawings must be very delicate and delicate to achieve the goal. Finally, use lines to describe the black, white and gray of the entire painting, and the effect will be better.