Contrast often works better than matching
Angular frames can sharpen softer round faces, while rounder or oval frames can soften square jawlines. The goal is balance, not duplication.
Scale matters as much as shape
Frames that are too narrow can exaggerate width. Frames that are too large can overpower delicate features. Use cheekbone width and brow line as your main reference points.
Heart and oblong faces have their own sweet spots
Heart-shaped faces often suit lighter lower rims or softly curved frames. Oblong faces usually benefit from deeper lenses that visually shorten the face.