I positioned her with the sun low behind her, letting it catch the loose strands of hair and rim her whole silhouette in gold, while a reflector or open shade kept her face itself softly and evenly lit rather than going dark against that backlight. That contrast, glowing edges against a clear, well-lit face, is what gives the shot its warmth without needing any added color grading.
Her expression stays neutral and direct, no forced smile, which is exactly what casting directors want to see in an actor's headshot: a face they can read clearly, one that could believably shift into any emotion the role calls for.
It's the kind of light and direction I aim for in every actor headshot session: natural, unforced, and built around an expression versatile enough to work across different types of roles.