You have to read all the instructions before starting so that you know beforehand what the different stages are, and you must follow all the directions exactly. It is recommended that you make your cast at room temperature between 18° and 25°C to ensure the accuracy of the times given in the instructions. It is important to prepare all the elements required before you set about making the sculpture. Similarly, when you start the cast, you are advised to keep you child near by so that you can put his hand or foot quickly into the moulding material as soon as it is ready.