In fact, most examiners prefer pencil sketch, but charcoal sketch is more effective. If people with unstable psychological quality draw with charcoal pen before the exam, it is quick and effective. If you draw with a pencil, you usually prepare a 3B with an 8B heel. Fast people can draw the action structure with 3B first, then draw the smooth lines with 8B, and 3B can also handle the details.

Generally speaking, pencil for sketch does not advocate sharpening all pens, and it is better to flatten them. Paintings drawn by people with flexible hands and feet are more enjoyable than charcoal drawings.