Design a 3D model of Thanos' hand in a powerful pose, inspired by the Infinity Gauntlet. Include detailed engravings, gemstone slots, and intricate patterns to resemble the gauntlet from the Marvel universe. Focus on realistic proportions, smooth surfaces, and sharp edges. Ensure the fingers are slightly curled as if holding power, and design the palm to allow for customizations like holding objects or integrating LEDs for lighting effects