Illyan's smile sharpened at Miles's fervent tone.

Gennie's smile sharpened, her aristocratic eyebrows arched.

His smile sharpened and shadows moved in the depth of his eyes.

His smile sharpened at the corners.

Her smile remained in place, but sharpened like a scalpel.

Arian's smile sharpened as she boarded the elevator.

Khan's eyes narrowed and his smile sharpened, showing teeth.

Her smile sharpened when she saw that shaft strike home.

The smile he gave her faded, his eyes sharpened as he heard a voice softly crooning a verse of an old Irish ballad.

The merchant's smile had sharpened, the merry eyes had narrowed a little.