3) Respect tradition
AKA, wear a powdered wig on a daily basis. Sure, people will say that look is just for old school judges, but don’t listen to them. You respect history! If you want to look really professional, keep an ancient scroll with you at all times. For true bonus points, randomly open an old law textbook throughout the day and shout passages at passersby. Soon everyone will know how lawyer-y you are! That’s all that truly matters.