sentence: A person applies paint designs to a red fingernail on a  plastic hand with a flexible black limb labeled "nail trainer". sentence:   A brown plastic hand with a black plastic arm appears with white fingernail tips and red fingernails. sentence:   A person's real hand appears and begins to apply white designs on one of the red fingernails on the plastic hand. sentence:   The scene then fades to a closeup of one finished red fingernail with a complete white design from the plastic hand.