Accessories, when chosen thoughtfully, can significantly elevate the look of your 3-piece suit. A pocket square adds a dash of colour and personality, cufflinks show attention to detail, a tasteful tie can tie the whole look together, and a classic watch can add a finishing touch of sophistication. Consider accessories that contrast or complement the colour of your suit, but be careful not to over-accessorize. Remember, less is often more when it comes to accessorizing a suit.