The patachitra when painted on cloth follows a traditional process of preparation of the canvas. First the base is prepared by coating the cloth with the soft, white, stone powder of chalk and glue made from tamarind seeds. This gives the cloth tensile strength and a smooth, semi-absorbent surface, allowing it to accept the paint. The artist does not use a pencil or charcoal for the preliminary drawings. It is a tradition to complete the borders of the painting first. The painter then starts making a rough sketch directly with the brush using light red and yellow. The main flat colors are applied next; the colors used are normally white, red, yellow, and black. The painter then finishes the painting with fine stokes of black brush lines, giving the effect of pen work. When the painting is completed it is held over a charcoal fire and lacquer is applied to the surface. This makes the painting water resistant and durable, besides giving it a shining finish.
The materials used in the paint are from vegetable, earth, and mineral sources. Black is made out of lampblack, yellow from haritali stone, and red from hingal stone. White is prepared from crushed, boiled, and filtered shells. The subject matter of the patachitras include religious, mythological, and folk themes. Krishna leela and Lord Jagannath are important motifs.
The patachitra artists also paint their themes on wooden boxes, on bowls, on tassar silk, on outer shells of the coconut, and on wooden doors. They are also working on producing painted wooden toys based on animals and birds portrayed in the paintings. The English alphabet is cut in the wood and painted in the patachitra style for sale. The artists have also traditionally painted playing cards or Ganjifa. Chitra-pothies --- a collection of painted palm leaves stacked on top of each other and held together between painted wood covers by means of a string --- illustrate mythological themes.
Patachitra paintings were traditionally drawn by the mahapatras or maharanas, the original artiste caste in Odisha. These paintings became an important art form with the ornamentation of Lord Jagannath in the innermost sanctum, where paintings on especially treated cloth or pata of the deities were done by the temple painter. The themes were tribal and folk.