Create an eye-catching image featuring a radiant, futuristic cityscape at twilight. The scene should show a dynamic metropolis with sleek skyscrapers, neon lights, and digital billboards glowing in vibrant colors. In the foreground, a charismatic character with an excited expression is holding a holographic sign that reads: 'Help Me Spread the Buzz!' surrounded by glowing, animated icons of social media and stars. The background should include a starry sky with streaks of comet trails and a bright, full moon illuminating the city. The overall mood should be energetic and inviting, encouraging viewers to engage and share.