Using your 3D polyester curtain is a breeze. Just use the hook - top design to hang it up in your desired location. When it comes to washing, first separate the curtains based on color to avoid color bleeding. Put them in the washing machine on a cold, gentle cycle, and make sure the water temperature doesn't go over 30°C. Don't worry about small size errors of ±3 cm, as they won't stop the curtain from fitting well. Each set contains two panels, so measure and arrange them according to your window size. Keep in mind that there might be a little color difference between what you see on your screen and the real product because of monitor variations.