When I first learned photography in the military, it was mainly for documenting events. The goal was to grab some shots and move on. There was no need for dramatic lighting. And portrait photography was basic, very basic. Make sure you can see both their eyes and use a fill flash. Those lessons served me well, for a time.
When I started doing wedding and portrait photography, my world opened vastly. It expanded to the use of natural light and the power of shadows. Ironically, shading parts of someone’s face or the scene can give the photograph more personality, more pizazz or simply, more mystery.