After graduating from middle school, Liu went to work for an ad agency as an art assistant, then into its cartoon department as a cartoonist. Animation training helped Liu, who had long been an autodidact, strengthen her foundation in the arts.
國中畢業後劉秀美進入廣告公司當美術助理，再到卡通部門學畫卡通，動畫的分格訓練，讓自學出身的她奠下紮實基礎。