This document discusses different techniques and mediums used in two-dimensional contemporary art forms. It defines medium as the material used to create a work of art, and identifies various painting surfaces like canvas, paper, wood. It also explains properties of medium like scale, format and frame. Dry mediums like pencil and wet mediums like watercolor are discussed. Key painting techniques include wet-on-wet, dry brush, alla prima, glazing and scrumbling. Paint is composed of pigments, binders and solvents. Contemporary artists often apply paint directly onto canvas using the alla prima technique.