To use your Barbie Dreamtopia mermaid doll, simply hold it and start creating those magical undersea tales. You can play with it on your bed, floor or any flat surface. Remember, the dolls can't swim or stand on their own, so you'll need to support them when you pose them. When it comes to maintenance, keep the doll away from sharp objects that could damage the delicate accessories. If it gets dirty, use a soft, damp cloth to gently wipe it clean. Colors and decorations might vary, so enjoy the unique look of your own mermaid doll!