Prompt: An alternate-reality $20 banknote design, depicting a benevolent alien ambassador, in the style of engraved historical portraits, the year 2150, Hard Science Fiction, retro-futuristic speculative design, Moebius and Syd Mead inspired high-tech anatomy, subtle glowing bioluminescent features, intricate textured attire displaying their alien civilization's achievements, illuminated neon signatures and serial codes, influenced by classic colonial American currency engraving, hyper-detailed textures and materials, cinematic lighting bringing out rich colors and textures, representing first contact and cultural exchange, masterful 32K resolution