Using these 3D lake scenery curtains is easy. Just hang them up in your living room or bedroom using the free hooks provided. They'll help reduce noise and save energy, creating a more comfortable environment. When it comes to maintenance, you can gently machine - wash them in cold water. As for the color difference, don't worry too much. It's normal because of monitor settings. Remember, each set has two panels, so check the size carefully before you hang them up. If the set size is 118 inches wide by 106 inches long, each panel is 59 inches wide by 106 inches long.