"Good shapes" can be replaced with a variety of other words that convey a similar meaning. One option is "well-formed," which suggests a pleasing and proportional physical form. Another synonym is "symmetrical," which denotes an object that is uniform and balanced. "Sculpted" is another word that describes something that has been carefully crafted or honed to create a pleasing shape. "Elegant" and "graceful" are synonyms that suggest a combination of beauty and ease of movement. Lastly, "defined" or "toned" are words that refer to shapes that are lean and muscular. All of these synonyms can be used interchangeably with "good shapes" to describe physical forms that are visually appealing.