1girl, solo, bartending, detailed ink sketch, sleek ponytail, bartender uniform with bowtie, mixology tools in hand, focused expression, well-defined cheekbones, slight stubble, cocktail shaker in motion, blurred background with bar shelves filled with various liquor bottles, dimly lit upscale lounge, subtle reflections on glassware, black vest, white shirt, polished bar counter, professional demeanor, charismatic smile, colorful cocktail in the foreground, garnish details, ambient glow from hanging pendant lights, cocktail menu on the side, upscale and sophisticated atmosphere, elegant posture, pouring liquid with precision, classic and timeless style