I’m fairly certain it was Raymond Chandler who said, “Come into a scene late and get out early.”
Kurt Vonnegut, Jr.; “Start as close to the end as possible.”
Vonnegut also said, “Every sentence must do one of two things – reveal character or advance the action.”
Elmore Leonard said, “Leave out the parts readers tend to skip.”
On the other hand, this adagio from Concierto de Aranjuez, by Joaquín Rodrigo, is all flourishes– and every one of them is essential.