Composition: Composition refers to how the elements and principles of art are arranged within a 2D artwork. It involves considerations such as balance, contrast, and focal point.
Perspective: Perspective is a technique used in 2D art to create the illusion of depth and three-dimensionality on a flat surface. It involves using vanishing points and converging lines.
Collage: Collage is a 2D art technique where various materials, such as paper, fabric, or photographs, are combined and glued onto a surface to create an artwork.