To use this product, start by carefully taking out all the parts from the kit. Then, follow the included instructions to build each of the 5 vehicles. After building the vehicles, combine them together to form Victory Mars. When using the gold - colored sword for the special attack display, handle it gently to avoid breakage. As for maintenance, keep the model in a dry place away from direct sunlight to prevent color fading. If it gets dirty, you can use a soft brush to gently clean it. Make sure to assemble the model in a clean area to avoid getting dust or small particles stuck in the parts.