TEXTURE

Texture: It is yhe visual tactile quality of the surfaces due to the material
Tactile texture: Are those that can be percived through the sense of touch
Visual textures: Those which can only be percived through the sense of sight
Natural texture: Those that can be found in nature
Artificial texture: Are those created by the human beging manually or mecanically
Rubbing tecjnique: It consists on frictoning or rubbing a crayon or colored pencil on a thin paper which is over a surface with a tactile texture so the texture gets copied on the paper
Scratchboarding: It is usually done with waxed colors and it consists on giving two coasts of color to the media being the second one darker, so when scrathing over the first layer the second one shows up