The examiner will tell you the areas you need to improve upon if you fail your road test. Take the examiner's advice and practice, targetting specially those weaker areas the examiner pointed out. You must wait 2 weeks before rescheduling your test. During that time, it's important to practice. Don't rush to take the exam to oquickly. Make sure you are ready before you pay the retest fee and schedule to take the test again.