Create a front-facing portrait of Hatsune Miku, the iconic virtual pop star, in the style of artist Kei. The image should focus on Miku's head from the neck up, capturing her in a cute and characterful anime style. Pay close attention to achieving symmetry in her facial features, ensuring a balanced and harmonious design. Miku's expression should be friendly and engaging, reflecting her cheerful persona. The final image should serve as a reference for creating a 3D model, so it must be presented directly facing forwards, allowing for easy tracing. Emphasize the distinctive characteristics of both Hatsune Miku and Kei's artistic style, while maintaining a high level of detail and aesthetic appeal.