Smart studying + good test strategy can improve your grade by a full letter.
Preparation
Start 2 weeks before (minimum). Create a study plan working backwards from exam date. Focus 80% on weak areas, 20% on review of strong areas. Practice tests are the #1 predictor of exam performance.
The Night Before
Stop studying by 8pm. Review summary notes only. Pack everything you need. Sleep 7-8 hours (sleep consolidates memory — all-nighters are counterproductive).
During the Exam
Read all questions first. Answer easy questions first (builds confidence + ensures you get those points). Budget time per question. Review answers if time permits.