Pencil and charcoal: used to draw the light and dark tones of different parts, the approximate background color of black, white and gray.
Eraser: Modify the picture.
Plastic rubber: can brighten the part of the picture that is too dark, it is sticky, and sticks to the surface of the paper
Lead powder in black.
Paper eraser pen: Smear the light and dark transfer, the transition is softer, and then lined to draw a three-dimensional effect.
Utility knife: sharpen pencils.
Extender: The pencil is too short and the extension can still be used.