Cut several 10" lengths of the mesh - all four colors - using the rotary cutter. You will cut additional pieces as needed.
Take approximately ten pipe cleaners and cut them into four pieces each. You will cut additional pieces as needed.
Take one of the lengths of mesh and roll into a tube (not too tight). Hold the tube in one of your hands and pinch and twist between your fingers.
Start anywhere on the round wreath form. Bend the tube around a wire, bring the ends together, and secure by twisting a pipe cleaner around the mesh right by the wire.
Repeat this process with the rest of your mesh pieces, alternating colors to make it random.
Continue until you have covered the entire wreath form. You might need to push the mesh tubes up and away from the center so that you can add more. They really want to spread out, as you will see.
Once all the tubes are attached, give your wreath a final "fluff" and hang.
Video
Notes
Usually I like to work from the center out, but it doesn't really matter. You can start anywhere and just keep adding tubes. Notice where the sparse parts are and add mesh to fill in.