(my latest post on the Pro Photography blog)
Making prints on a softly textured canvas can provide a pleasing, painterly look to your images. Printing on canvas can also eliminate the need for an expensive frame and matting, remove glass as a barrier to viewing, and provide an additional step in the creative process.
However, canvas prints typically require some sort of finishing treatment. You should definitely plan to apply some sort of liquid coating or spray to provide protection against display hazards. After the coating has been applied, you can brush on some clear gels that will enhance the surface texture of the print and make it look more like a one-of-a-kind piece of painted art. (more)