Adding a pocket square is not only a chance to put a little bit of flavor to your formal look but also a way to complete your outfit. It’s important to remember that your pocket square should not match your tie in color, pattern, or fabric, but rather complement it. 

When In Doubt, Keep It Simple

Another important rule of rocking the perfect suit is to just keep it simple. If you’re trying to mix and match colors, patterns, styles, etc., you may end up looking more like a clown than a dapper young man. A clean, simple, and streamlined formal look will always be sophisticated and classy. 

Tips and Tricks

• Cover your tie and collar: your tie should never hang below your suit jacket, and you should cover your collar with the lapel of your suit jacket.
• Unbutton your suit coat when sitting down.
• Cut your suit: sometimes, parts of a suit, like the vents and sometimes the pockets, will be sewn together with thread; carefully snip those threads to open up anything that may be stitched closed. If you’re unsure and don’t want to ruin your new suit, take it to a tailor or a professional to make sure everything’s the way it’s supposed to be. 
• Thin lapels are considered more modern, while wide lapels are a bit more, how to say, dated and slightly out of style (but to each their own). 
• Check the fit of the shoulders on your suit coat – too wide and you’ll look like you’re a 12-year-old kid borrowing his dad’s suit; too tight and you’ll like you’re trying to squeeze into the suit you had when you were a teen. 
• Your shirt cuffs should stick out about a half of an inch from your coat. 

See more about – What Is Formal Attire?