How do you make sure a perfect sample to be made?

A technical drawing will be sent to you for approval base on your provided graphic after order confirmation, normally 2D structure items will be very easy to realize, however, for some complex designs involve very fine detail, 3D relief or full 3D such as cartoon & sports figure, portrait or fine detailed scenery, we will provide wax or aluminum made prototype for your approval before proceed actual tooling, so any mistake or detail can still be revised beforehand.