How does Natasha Nicholes’s lipstick technique with MAC Ruby Woo outperform other methods?

That Ruby Woo look in Normal used a Currant lip liner ombré that really makes the shade sing. Lining and slightly filling in with Currant deepens the outer corners, lets Ruby Woo pop in the center, and creates dimension without looking overdone. It also keeps that notoriously dry matte formula neat and crisp, so the red looks intentional, not harsh.

Want a quick breakdown of how to recreate that ombré step by step?