The medium on which pastels can be done is a wide range because pastels are versatile. They can be done on any surface but we need to consider its tooth for the pastels to grip. Textured papers are widely used for pastels. We can also use boards, canvas, etc.
It is important to consider the tooth and texture of the surface. The tooth is considered the tiny bumps that you can feel on rough surfaces. Pastels need tooth and texture for their grip. They are not like the other media that bind to the surface. The tooth is also needed to bring the pigment from the pastel with its roughness.
Since paper is the best support for pastels and is relatively cheap, along with the sufficient tooth, you can give it a try. You can get paper with different thicknesses, textures, and colors.
