Create a highly detailed mixed-media portrait that encapsulates the spirit of Science Fiction Day, featuring a futuristic character—an alien with luminescent skin, vibrant irises resembling galaxies, and intricate tattoos that glow softly. The character should wear a high-tech suit adorned with holographic elements and digital displays that shimmer. Set against a backdrop of a futuristic cityscape with towering skyscrapers and flying vehicles softly blurred to create depth, use dramatic, high-contrast lighting from above to emphasize the character's facial features, casting dynamic shadows that enhance the three-dimensional effect. Incorporate glowing neon lights and a starry sky, suggesting a blend of both urban and cosmic environments. Utilize a portrait lens with a focal length of 85mm and an aperture of f/2.8 to achieve a sharp focus on the character while softening the background. Apply photographic textures for skin details and digital painting techniques for the clothing and background, ensuring the portrait maintains a hyper-realistic quality while showcasing creativity and imagination. Subtle post-production effects, such as lens flares and color grading leaning towards cool blues and purples, should heighten the sci-fi atmosphere. Keywords: "science fiction portrait," "mixed-media illustration," "futuristic character," "dramatic lighting," "high-tech attire," "ultra high resolution."