Williams makes Blanche's entrance striking in three key ways: 1) He uses vivid description of her appearance with concrete nouns like "pearl earrings" that imply she is of higher class, which is incongruous with the setting, foreshadowing her outsider status. 2) Adjectives like "daintily dressed" and references to her "delicate beauty" present her as fragile like a doll or fairy. 3) Adverbs and her "faintly hysterical" behavior hint at instability, emphasized through words like "uncertain" that establish this as a theme from the start.