Hoodie

Remember three colors: white, black, and beige are called "wild colors".
Three points and one line: For a well-dressed man, the collar opening of his shirt, the belt loops, and the outside front opening of his trousers should be in a line.
If you're wearing a suit and no tie, you can wear those loafers, but if you're wearing a tie, you can't.
On a new shirt, if you stick two fingers between the neck and the collar, the shirt will still fit well after washing.
If you're strong, wear a dark suit instead of a jacket.
Go for pinstripes or the less obvious the better, and choose fabrics that show patterns only when you look closely.