To wear this autumn Kori dress, simply put it on like any regular dress. You can style it with a belt if you don't mind the missing waist tie. As for the loose button, you can easily sew it back on using the spare. When it comes to maintenance, it's best to follow the washing instructions on the label. Usually, a gentle machine wash or hand wash in cold water is recommended. Avoid using harsh detergents to keep the fabric in good condition. Also, dry it flat to prevent any shrinkage or damage. Since it's a sample piece, cherish it as a special addition to your wardrobe.