To use this kit, first take out your separately - bought SH Figuarts Kamen Rider Ark One. Then, carefully start making the necessary modifications as per the design of the kit to turn it into Kamen Rider Thousand Ark. Remember, this is a fully painted kit, so you don't have to worry about coloring it. As for maintenance, keep it away from direct sunlight and excessive moisture to prevent any damage to the paint. When not in use, store it in a cool and dry place. And since it requires modification of your original figure, be gentle during the process to avoid any breakage.