Do you want to impress others with your programming skills and create a cool 3D model viewer? Here's how you can do it! First, you'll need to choose a programming language that supports 3D rendering, such as JavaScript with Three.js or Unity with C#. Next, you can start by creating a simple interface that allows users to upload 3D models in popular formats like OBJ, STL, or FBX. Use JSON to store and manage the data of the 3D models, including information about vertices, faces, materials, and textures. Once you have the basic structure in place, you can add features like camera controls, lighting, and shading to enhance the viewing experience. As you progress, consider implementing functionalities for animation, interaction, and other advanced features to make your 3D model viewer even more impressive. With dedication and creativity, you'll soon have a fully functional 3D model viewer that showcases your programming skills and creativity. So, what are you waiting for? Start programming your 3D model viewer today and stand out as a talented developer in the world of 3D modeling and rendering!