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Subtle Natural Smile Female Portrait Prompt Configuration
facial expression · gentle smile · portrait study · natural happiness
{ "expression_block": { "emotion_type": "soft joyful smile", "intensity_level": "low to moderate (30-40%)", "smile_style": "subtle controlled smile", "teeth_visibility": "only upper teeth slightly visible (approx. 20-30%), lower teeth not visible", "lip_movement": "gentle horizontal stretch without excessive vertical opening", "jaw_opening": "minimal (10-15%)", "lower_to_upper_lip_ratio_preserved": true, "oral_commissures": "lifted slightly upward, natural curvature", "nasolabial_folds": "softly engaged but not pronounced", "cheek_activation": "mild zygomaticus major engagement", "eye_expression": "eyes remain open, minimal narrowing (2-3%)", "brow_position": "neutral, relaxed", "overall_feeling": "warm, genuine, feminine, calm happiness" }, "micro_expression_constraints": { "no_wide_grin": true, "no_full_laughter": true, "no_overstretching_lips": true, "no_exaggerated_dimpling": true, "no_eye_squinting": true, "preserve_bone_structure": true, "preserve_facial_ratios": true }, "negative_prompt_addition": [ "laughing hard", "wide open mouth", "big teeth exposure", "exaggerated grin", "horse laugh", "overstretched lips", "squinting eyes", "cartoon smile" ] } Composition optimized for a 9:16 aspect ratio.