The term CHANGE ONE'S refers to changing something about oneself. The two crossword solutions for this term are TUNE and IMAGE. TUNE is a 4-letter word that can refer to the act of adjusting or altering something, such as a musical instrument or a car engine, in order to improve its performance. IMAGE is a 5-letter word that can refer to the way someone or something is perceived by others, such as an individual's reputation or the public perception of a company. Both words can be used to describe the act of changing something about oneself in order to improve ONE's performance or reputation.