What should people pay attention to in line drawing?

attention should be paid to the line drawing of objects:

1. The face is suitable for delicate and definite lines

2. Generally speaking, the parts of clothes that are close to the body can use key and solid lines, and the folds are in contrast with each other, and the lines should be considered in combination with the light and shade law of sketch. The decorative patterns on clothes or some minor decorations can be expressed by light lines.

3. The lines should be smooth, and even one line should be light and heavy to show the reality and hierarchy.