Cut away any hanging fibers or material extending beyond the scratch with scissors.
Sand the scratches by hand with high-grit sandpaper until the scratches are smoothed down and flush with the rest of the surface material.
Pour the solvent from your repair kit onto cotton swabs and then wipe the surface of the leather furniture clean with the cotton swabs.
Wait 10 minutes for the solvent or alcohol cleaner to evaporate. Use the palette knife and surface filler from your repair kit to fill the scratch marks. Allow five minutes for the filler to dry and then sand it down with high-grit sandpaper.
Purchase leather colorant that matches the color of your leather furniture. Use a small sponge or cotton swab to apply the leather colorant. Allow at least one full hour for the leather colorant to dry.