3. Measure the size of the installation part with a ruler, and then use a stationery knife or scissors to carefully cut it down according to the measured size.
4. Put the cut material on the installation part, to ensure that the size is appropriate, tear one side of the paper, stick to the metal surface, while pressing the hand, tear the paper until all the material is bonded.
5. After the installation is complete, reinstall the door panels in the reverse order.