'like the boss, he wore high-heeled boots' - highlights curleys importance, higher status - not the average ranch worker
'His arms gradually bent at the elbows and his hands closed into fists. He stiffened and went into a slight crouch' - shows curleys aggressive and volatile nature - also shows his experience as a boxer
'Curley lashed his body around. 'By Christ, he's gotta talk when he's spoke to'" - aggressive reaction to not being answered, dislikes not being treated with the authority he thinks he deserves