To install เอซีพี sheets on a wall, start by planning the layout and cleaning the wall. Measure and mark the wall for alignment. Cut the ACP sheets to size, apply adhesive evenly, and press them onto the wall, starting from a corner. Secure the sheets with screws and seal the edges with sealant. Clean the surface and inspect the installation for any issues. Safety gear is essential, and for inexperienced individuals, hiring a professional is recommended.