Using this Nanoblock set is super easy. Just follow the detailed step - by - step building instructions that come with the set. Start with the base and gradually add the blocks according to the guide. You'll have your cute Kuromi figure in no time. When handling the blocks, be careful as they are very small. Keep them away from small children who might accidentally swallow them. To maintain your completed model, store it in a dry and clean place. Avoid touching it too much to prevent the blocks from coming loose. If it gets a bit dusty, you can gently blow on it or use a soft brush to clean it.