Oil painting portrait with introspective gaze

Ultra-realistic 8K high-resolution oil painting portrait, 4:5 vertical, using the provided image as the ONLY facial/identity reference; preserve 100% facial structure, proportions, skin tone, age, likeness, natural imperfections, and realism with no beautification or identity alteration. Close-up head-and-shoulders portrait, no hair/head cropping. Subject with naturally styled hair and subtle brown highlights, warm light-olive skin with visible painterly texture, delicate imperfections, soft blush on cheeks/nose, full slightly parted soft-pink lips. She rests her face gently against her right hand, fingers curved along cheek, gazing off-camera; calm, introspective, slightly melancholic expression. Cream oversized knitted sweater with thick visible ribbed texture. Warm off-white/beige textured plaster background with palette-knife strokes. Soft diffused natural light from left, gentle facial highlights and soft right-side shadows, warm low-contrast tones. Eye-level, 85mm portrait feel, painterly shallow DOF, sharp eyes/features. Contemporary classical realism with subtle impressionism, layered glazing, visible brushstrokes, palette-knife textures, impasto highlights, rich tactile detail.