Da Vinci-Style Sketch Portrait with Castle Illustration Cloak

A detailed technical sketch-style portrait of a young woman with long wavy brown hair with golden highlights, parted in the middle, cascading past her shoulders. She has fair skin, sharp expressive brown eyes, defined eyebrows, and a neutral, contemplative expression, gazing slightly off-camera. She wears a thick maroon and gold plaid scarf wrapped around her neck, paired with a dark textured jacket. On the jacket's shoulder and chest area, an intricate golden-toned illustration of a gothic castle with tall spires and turrets is rendered in fine linework, alongside a heraldic crest featuring a lion emblem in red and gold. The background is composed of faint Leonardo da Vinci-style technical schematics: overlapping circles, geometric construction lines, measurement marks, and Vitruvian-inspired proportional diagrams in sepia and graphite tones, with subtle aged paper texture and scattered botanical linework in the corners. The overall aesthetic blends fine ink illustration with warm sepia and antique gold coloring, evoking a Renaissance sketchbook combined with fantasy adventure themes. Portrait orientation, close-up composition from chest up, soft directional studio lighting emphasizing facial features and hair texture, fine hand-drawn linework style, highly detailed illustration, intricate crosshatching, warm earthy color palette, atmospheric and intellectual mood, ultra-detailed digital illustration quality.