Like this look with denim shirt, Barrow Bologna chinos, IWC watch mod. Portuguese and knitted tie. I usually like aknitted tie with with a denim shirt. But not with chinos/khakis. I'd rather had this look without the tie
Here is an example of a basic suit. It's simple yet classy. Do not forget the tie clip! A floppy tie is enough to bring your whole look down. Also, a fitted shirt is key. You don't want to look like you are swimming in your clothes.