Start by cutting your paper tube to size. Mark how wide you want each ring to be, and trace around the tube to create guidelines for cutting.
Use a craft knife or box cutter to cut through the paper tube, making sure to cut carefully and stay within the guidelines for a clean and uniform edge.
Cut strips of vinyl the same width as the paper tube rings to cover them.
Carefully cover the inside and outside of the paper tube with vinyl, making sure it is centered and there are no bubbles. Trim off any overhangs for a cleaner look.
Finish the edges of your napkin ring by coloring the edges with a marker the same color of vinyl you have used.
Cut the monster faces with a die-cutting machine or scissors. If you are cutting using a die-cutting machine, resize the image to your desired size - mine was about 2 inches high. Cut one for a front and one for a backing to make the monster face sturdier.
Once done cutting, glue the front and the backing together and wait for that to dry.
Use googly eyes and paper teeth to assemble your monster faces. Once you are done, leave that to dry.
Attach the monster face to the napkin ring using hot glue. Let cure completely before using.