The suit gets the attention, but the accessories make the look. Small choices, made well, turn a good outfit into a complete one.
Start with the tie. A solid or subtly patterned tie is the most versatile choice; a bow tie is the classic partner for a tuxedo and black-tie evenings. Keep the width in proportion to your lapels.
A pocket square adds personality to the breast pocket. White is always safe; a subtle pattern or texture is the next step once you are comfortable.
Then the quiet details: cufflinks for French-cuff shirts, a leather belt that matches your shoes, and formal shoes polished and in good repair.
The rule for accessories is restraint. Choose one piece to stand out and let the rest support it — the finished look should feel considered, never crowded.