Let's briefly talk about the essentials of sketching!

Sketch essentials: 1, accurately grasp the shape, (that is, the shape and appearance should be drawn correctly without distortion) 2, the relationship between light and shade should be correct, (that is, the direction of light should be consistent, it will be difficult to draw badly, and the whole picture will be chaotic) 3, emphasize the contrast between light and shade, (that is, the dark places should be deep, the bright places should be white, not all gray) 4, highlight. 5, the object should be clearly defined, (that is, what we call the relationship between reality and reality) 6, the picture should be clean (that is, when painting, the paper should be clean and you can't finish painting. This is a fatal flaw. Fine lines can be used when painting, and the lines should follow the direction of the object lines, which will be very clean and refreshing. Be careful, try not to use erasers, mud and the like.

If you do this, you will definitely get high marks! !