The work of the image of the wax image must begin with the most basic clay sculpture. The clay sculpture is a stereoscopic view of the data collected by the sculptor, and the data and related data of all planes are displayed by the sculptor by the progressive sculpture. It takes the longest time to finish a silicone sculpture like a head. The success or failure of silica gel depends on the sculptor's grasp of the shape and spirit of the clay manuscript, so mud manuscript is also very important.