Applying paper texture
Corel Painter allows you to apply paper texture to the canvas. In general, you can define texture as the roughness or coarseness of a surface, which you can both see and feel. In Corel Painter, however, texture modifies only the appearance of the image, to give you the illusion of surface roughness. It also interacts by subtly or dramatically altering the appearance of brushstrokes.
In addition, certain brushes include a "grainy" method subcategory that is specifically designed to react with the paper texture and grain. Some brushes also let you determine the amount of grain that is revealed by each brushstroke. For more information about brush methods, see General controls: Methods and subcategories.
One brushstroke applied to three different paper textures
It is important to note that some brushes, such as those in the Airbrushes category, don’t reveal paper texture in their brushstrokes. This behavior corresponds with that of a traditional airbrush.
Corel Painter includes several default paper textures that are stored in the Papers Textures library. For more information about working with libraries, see Working with libraries. Additional paper textures are also provided on the Corel Painter DVD and on the Corel website.
To apply a paper texture
Media Panels Papers), click a paper texture swatch in the Paper Textures area.
The currently selected paper is saved with the document. This includes custom paper textures that may not be saved in a paper texture library.
When the Brush tool 
is selected, you can choose a paper texture by clicking the Grain flyout button 
on the property bar and clicking a paper texture swatch. For more information, see To apply a paper texture using the property bar.