Wrap twine around the Styrofoam ball as a guide.
Use the foam tool or a butter knife to score the foam beside the twine.
Remove twine and make score line deeper with the tool.
Repeat process to get three lines that go all the way around the ball and are approximately evenly spaced.
Lay plaid or burlap over one section that you have created. Stuff the fabric into the line a little all the way around.
Use scissors to trim fabric as close to ball as possible. Stuff fabric into the line completely all the way around.
Repeat for all sections alternating between plaid and burlap.
Use twine and hot glue to cover up where all of the fabrics meet. This will also help to secure everything.
Use an additional piece of twine for a hanger at the top. Secure with hot glue.
The plaid and burlap ornaments are ready for your tree!