3D character model, Garry's Mod, player model creation, T-pose, rigging, Valve's Source engine, custom textures, facial expressions, gaming, modding, Blender 3D software, physics model, collision mesh, Lua scripting, spawn menu, in-game testing, Steam Workshop, digital art, character design, interactive environment, close-up shot, dynamic lighting, high-resolution textures, detailed sculpting, action pose, sandbox game, creative gaming community, real-time rendering.