Sketch is the art of light and shadow, shape and three-dimensionality, and is the basis of painting.
How to draw a good sketch:
1. Before drawing a sketch, you must fully practice various lines. Practice straight lines (the same as below for long horizontal lines and long vertical lines), flat painting (one line next to another, in blocks), arc lines (half-moon shape, in groups), loop line exercises (one continuous stroke, in groups), You also need to do group exercises of lines from shallow to deep and from deep to shallow.
2. Simple steps for sketching. Before drawing, you should observe and study the basic shape of the object, its direction of light reception, structural shape, and the three-dimensional effect formed. Then use straight lines to outline its general outline, and then follow the light source. , determine the three parts of the object: light reception (light surface), side light (gray surface), and shading (dark surface). First, lay a uniform line on the dark surface and gray surface to temporarily leave the light-receiving surface empty. In this way, a large surface is used to express the object, and then the details in each block are also arranged according to the light receiving, side lighting, and shading. Divide into small pieces and facets to process. The reflective part should be left on the dark side, and the highlight part should be left on the light side to give it five tones. We should also pay attention to the light and shade of small pieces and small surfaces, so that they obey the unified tone of the large surface, and the large surface must obey the whole. Finally, add connecting layers between these surfaces to make them natural and rounded until they show texture. After the sketch is completed, the depicted objects must be coordinated and perfected.
3. Simple common sense of perspective in painting
1. The farther away objects of equal size are, the smaller their shape will be, so that they finally disappear at one point, which is called the vanishing point.
2. The farther away the objects are at the same distance, the shorter the distance between them should be.
3. A line that is at the same height and parallel to the painter's eyes is called eye level.
4. Everything lower than the painter's eyes is below the eye level and above it.
5. Everything higher than the painter's eyes is above the eye level and below it.
6. Standing on a wide flat ground and looking forward, the boundary between heaven and earth in the distance is called the horizon. When looking straight up, the horizon coincides with the eye level, and the horizon is the eye level; when looking down, the horizon is above the eye level. The horizon is an important basis for processing perspective graphics.
7. If the scenery is to the right of the painter, you can see the left side of it.
8. If the scenery is to the left of the painter, you can see the right side of it.
9. For any scenery above the eye level, the farther away it is, the lower its position on the drawing paper.
10. For any scene below the eye level, the further away it is, the higher it will appear on the drawing paper.
If you master the above knowledge of painting perspective and apply it to painting, you will not make common sense mistakes in painting, and the composition will be reasonable and in line with the beauty of visual appreciation.
4. Pencil selection: H means hard, B means soft. 6H is the hardest and 6B is the softest. For sketching, 3 pencils are usually enough. Use HB pencil for outline, 2B pencil for outline, and 4B pencil for shading. In actual painting, as long as you have an understanding of the performance of pencils and can control the intensity of use, you don't have to stick to this, you can control it flexibly.
5. The basis of sketching is to draw more pencil sketches. You can start with a plaster geometric model. Then, everything can be painted, such as porcelain, glass tea sets, cups and saucers, saucers and eggs, plaster head models, stationery and books, objects of various textures, indoor scenes, etc. From single to combined, from simple to complex. Gradually, you can try character sketch copying and sketching. Master the skill of using a brush by learning calligraphy and line drawing (that is, works expressed with a brush).
6. You must enter a state of selflessness when painting and do not rush for success. Even if you only paint one painting a day, as long as you devote yourself to painting, you will get unexpected results. You should often copy the sketch works of famous artists and read more books such as "Knowledge of Painting Perspective" and "How to Draw Sketch". Only by studying painting skills diligently and continuously can you succeed.