Long hair must be tied into a knot and must be well pinned. Avoid fashionable hairstyles. The outer appearance can be misunderstood. Wear minimalist makeup. Avoid wearing loud make up. Wear a light lipstick that matches your saree, kurta or suit. Wear a kajal so that it highlights your eyes and makes you feel fresh, and dab a compact that matches your skin colour. Avoid wearing high heels; flats or an inch heel will keep you trim. Due to long waiting hours, your legs might begin to hurt and make u look fatigue.
Carry a purse with basic necessities like a handkerchief, lipstick to re-do if dulled, kajal to re-do if ruined, a compact to keep your skin fresh, a wet napkin that's helps in removal of make up. Lastly, a mild application of perfume or deodorant makes one feel fresh for a long time.
Good luck to you all!