When it comes to hanging a large painting, there are a few general guidelines you should follow in order to ensure the job is done correctly. First and foremost, you need to make sure that the painting is properly secured to the wall. This means using hardware that is specifically designed for holding heavy artwork, such as screw-in hooks or hangers. Once the painting is securely in place, you'll want to make sure it is level. Use a spirit level or ruler to check both the horizontal and vertical alignment of the painting before stepping back to admire your handiwork!