Cheerful Young Woman with Blank Signboard

photorealistic studio stock photo of a cheerful young East Asian woman peeking over the top edge of a large blank white rectangular signboard, both hands gripping the sign, surprised excited expression with wide eyes and open smile, dark hair in a casual high bun with loose face-framing strands, wearing a light beige button-up shirt, clean bright yellow seamless backdrop, large copy space on the white board in the foreground, subject centered slightly above the sign, horizontal banner composition, high-key softbox lighting, even illumination, minimal shadows, crisp focus, smooth studio textures, fresh playful advertising look