Answer:
Incising: This involves cutting or carving lines or patterns into the surface of the clay using a sharp tool. The lines can be shallow or deep, and can create a variety of effects such as texture, depth, and contrast.
Adding texture: Texture can be added to the surface of a clay work in many ways, such as by impressing objects into the clay, rolling it on a textured surface, or applying a textured slip or glaze. This can create visual interest and depth in the surface.
Sgraffito: This is a technique where a layer of colored slip is applied to the surface of the clay, and then a design is scratched into the surface to reveal the clay underneath. This creates a contrast between the colored slip and the exposed clay.
Burnishing: This technique involves rubbing the surface of the clay with a smooth tool, such as a polished stone or metal spoon, to create a smooth and shiny surface. This can be done with or without a slip, and can create a polished, reflective surface.
Glazing: Glazing involves applying a layer of liquid glaze to the surface of the clay, which will then fire to create a hard, glassy surface. Glazes can be applied in many ways, such as brushing, pouring, or spraying, and can create a variety of colors, textures, and finishes.