portrait of a young woman using an ethereal approach with extremely subtle tonal variations. The piece should maintain its gradient transition from center to edges, but with a softer, more delicate range of values. Color and tone treatment: Core palette: Work within a nearly monochromatic range of cool greys, avoiding stark blacks Maximum darkness: Use gentle charcoal grey (80% grey) as the darkest tone instead of pure black Turquoise accents: Soften the blue to a pale, crystalline turquoise (reduce saturation by 40%) Fill values: Keep all fills between 10-40% opacity for a gossamer effect Gradient transition specifics: Face area: Use fills no darker than 40% opacity, building depth through layered translucent tones Upper torso: Begin with 30% opacity fills, complemented by fine line work Mid-composition: Reduce to 20% opacity with increasing emphasis on linear elements Edges: Fade to 5-0% opacity using only the most delicate scattered lines Technical approach: Layer multiple transparent fills rather than single opaque ones Use crosshatching with very light line weight (0.1mm) to build subtle shadows