When you are making painted papers for Mixed Media collages or working directly on a support (paper, canvas, art board etc.) you may want to add texture to your piece. In MIxed media, many different types of wet and dry media are used to offer a variety of marks, strokes and textures. A really cool way to create texture is to roll your brayer into a puddle of paint and than to roll the brayer again over a remnant of plastic mesh before finally rolling the brayer onto your work. The result will be the creation of nibs on the brush that will create a wonderful pattern once the brayer is rolled onto a Mixed Media piece. You can also try rolling the brayer (with paint already on) onto other interesting objects that you use for texture such as corrugated cardboard or patterned wallpaper samples.
It is amazing how you can create so many interesting marks and textures with common ordinary objects and household materials such as an old plastic credit card. One of my students in my Wednesday WHAL Mark making class introduced me to this credit card technique. You begin by placing paper (in this case we were using waxed deli paper called Kabnet) over an old credit card and making a rubbing with a pencil or black crayon. Plastic credit cards can also be used as "a palette knife" to spread paint on paper or canvas. You can also scrape into a painted paper with the edge of the credit card to create nice lines and marks.