1. Prepare the damaged area.
Prepare the damaged area by trimming off loose threads or jagged bits and cleaning it with a household cleaner. Since the padding is missing and the area under the damage is depressed, insert cotton balls or cotton batting and spread evenly.
2. Fill the depression and insert the backing fabric.
Fill the depressed area with filler materials like foam, old cloth pieces, or cotton. Avoid filling in too much as it may cause the repaired area to bulge. Also, use fabric glue or foam adhesive to secure the filler in place. For this repair, you will need the backing fabric to hold the repair together. Cut a piece of backing fabric with rounded edges, slightly larger than the damaged area, and insert it with the spatula. Do not use the backing fabric for repairs smaller than 1/4 of an inch. Sew the backing fabric with the fabric material if the damaged area gets heavy wear and tear. This is to add strength and durability.
3. Mix and shake the repair fibers.
Fill the color fibers into the empty jar. Add the metal ball into the mixing jar, screw the lid on, and shake the jar for at least 30 seconds. Remove the metal ball and secure the mesh to the jar with the rubber band to create a sifter.
4. Apply a thin layer of fabric glue.
Apply the glue to the damaged area, under and along the edges, and work from the outside to the center to avoid air bubbles. Fill the damaged area as evenly as possible. Also, apply a thin layer of glue around the damage to blend in the repair.
5. Sift the repair fibers.
Hold the mixing jar above the adhesive upside down and gently tap the mixing jar. This will sift the fibers on the adhesive. Cover the fabric glue completely with fiber. Gently pack down the fibers with the spatula. Duplicate any fabric patterns such as lines or swirls with the spatula.
6. Allow drying time.
Allow 24 hours to dry. Once the fabric glue is fully dry, blow off excess fibers. If the repaired area gets hard wear, you can protect it by spraying a clear hairspray over the area.