large painting canvas-Direct coloring.
That is to say, after making the physical outline of the image on the canvas,Great Big Canvas  with the color sense of the image or the idea of the color of the picture laid color, basically
last time finished painting, the wrong parts with a painting knife scraped and continue to color adjustment.
In this way, the paint dipped in each brush is relatively thick, highly saturated,Big Canvas Art  and the brush strokes are clear, making it easy to express the vivid feelings when painting.
Many painters after the mid-19th century adopted this technique more.
In order to achieve the full effect of the color layer after the first coloring, we must pay attention to the use of the brush, namely, the commonly used coating method is divided into flat, loose and thick.
Flat painting is to paint a large area of color with unidirectional force and uniform brush, which is suitable for shaping a static shape in a stable and stable structure.
Loose painting refers to the movement of the brush according to the natural turning trend of the painted body,Large Canvas Art  which is relatively loose and flexible;
Thick besmear is whole or local ground is thick build material, some form as high as a few millimeter color layer or color piece, make pigment shows the interest of quality of a material, image also gets aggrandizement.
As a kind of art language, painting, lines, including color, light and shade, brushwork, texture, light, space, composition and so on many factors, the effect of oil painting techniques to the modelling factors synthetically reflected or focusing on a single item, the performance of the oil painting material fully provided in the second plane base on the possibility of using oil painting techniques.

The production process of oil painting is the creation process in which the artist consciously and expertly controls the oil painting materials, selects and applies the techniques which can express the art thought and form the artistic
Oil painting not only expresses the thought and content given by the artist, but also shows the unique beauty of oil painting language — the nature of painting.Method of multi-layer coloring.
When painting, use monochrome to draw the body big appearance first, then use multi-layer shape with color, dark part often is drawn thinner, middle tone and bright part are layer upon layer thick, or cover or stay, form color piece contrast.
Because thick and thin differ, show the rich rhyme meaning of colour and flesh texture.
There is no strict distinction between transparency and opacity, and artists often use a combination in a painting.
When presenting the image in the dark part or shadow, the transparent complex color method can produce a stable and profound sense of volume and space.
The opaque complex color law is easy to shape the shape outside the dark part, increase the color saturation of the screen.
Before the 19th century, most painters used these two methods. They took a relatively long time to make their works, and some of them were placed for a long time after finishing one layer and painted after the color layer was completely dry.The transparent overlay, in which the paint is not white but diluted by the blending oil, is painted on multiple levels.
The next layer of coloring must be carried out after each layer is dried. As the color of each layer is relatively thin, the color of the lower layer can be faintly revealed, and the color of the upper layer forms a subtle tone change.
For example, on the dark red color layer besmear is sedate blue, can produce blue in transparent violet namely cold in the rich effect that contains warm, this is often the tone that cannot be transferred on palette.
This painting method is suitable to show the texture and thickness of the image, especially to depict the delicate color changes of the human skin, making people feel the blood flowing under the skin.
Its disadvantages are narrow color range, fine production process, long time to complete the work, not easy to express the artist’s immediate feelings of artistic creation.