Gundam model kit instructions use clear, picture-based diagrams with symbols, letters (for runners/sprues), and numbers (for parts) to guide assembly, making them easy to follow even without reading Japanese; the process involves cutting parts from sprues (runners), cleaning up nubs, snapping pieces together, and applying stickers or decals, with optional painting for customization. Key steps include checking the parts list, following numbered steps sequentially, and paying attention to symbols for actions like gluing or applying stickers.