Study of technique. Untimed LSAT practice. Timed LSAT practice ... You can’t ensure a flawless answer sheet, but you can ensure that there is no question type you do not know how to approach.
You’ve got the LSAT in your sights. You’ve bought the books. You’ve made a study plan. You’ve blocked off your calendar. You’ve booked a test date and a back-up. You have a good handle ...