The teacher said that the sketch was not hard enough, but the appearance was soft. What happened?

Usually, "too soft" in sketch refers to the lack of strength in using the pen, especially when expressing some hard objects, lines and blocks are not sure with the pen, and lack of self-confidence will lead to the lack of texture. Draw more squares and you can change this problem. If you want to draw more squares, first, you should carefully observe and analyze the type, structure and light-shade relationship of the objects you draw. Second, before you put pen to paper, you should have a clear drawing step in your mind about the structure and light-shade relationship of the object, so that the priorities of putting pen to paper can be naturally expressed and the picture will naturally have a sense of rhythm; Third, we must draw the structure of the object, express it in blocks, and divide the small pieces into large pieces, and we must have the consciousness that "Fang Ning is not round, but Ning Zhuo is unfortunate". In this way, you can draw a powerful and full sketch. Don't worry, practice more, and you will draw well.