The document provides tips for planning and shooting sunset portraits based on windows of opportunity caused by changing light conditions throughout twilight. It outlines different lighting styles that can be captured, including: backlit orange light 30 minutes before sunset; balanced ambient and artificial light during civil twilight; silhouettes against colorful skies; and night portraits using environmental lights. Technical advice is given for different stages, such as using reflectors, tripods, and higher ISOs. The goal is to efficiently capture variety within a two hour shoot by anticipating the brief windows for each lighting style.