Using these sea animal scratch bookmarks is super easy. First, just take a bookmark and start scratching the surface with your fingernail or a small tool. As you scratch, a cool design will appear. You can create your own patterns and make each bookmark one - of - a - kind. Remember, these bookmarks are for kids aged 3 and up, so adult supervision might be needed for younger children. To keep your bookmarks in good condition, avoid getting them wet. Store them in a dry place when not in use. Have fun creating your own personalized bookmarks!