The perfect curtain length is when they just kiss the floor or hover slightly above.
Don’t hang your curtains right above the window, hang it at least 8 inches above the window. This can make your space look small and dark.
When your curtains are open, you don’t want them to cover any of the window. This makes your windows look small.
Take into account your wall color and furniture color before choosing your curtain. Neutral colors like white, beige, and gray are a safe color option.