Building a consistent color grade from scratch in Resolve for documentary work

[AmeliaS]

I'm a freelance videographer transitioning from basic correction to more artistic color grading for my documentary and commercial work. I understand the technical tools in DaVinci Resolve, but I struggle to develop a consistent 'look' and make intentional creative choices that serve the story. For other colorists, what is your process for building a grade from scratch? How do you approach establishing a foundational look with primary wheels before moving to secondaries, and what methods do you use for shot matching, especially with mixed lighting conditions? I'm also curious about managing client expectations and presenting options without getting lost in endless revisions.