Technical drawings are called "flats" for a reason and the reason is that technical drawing depicts garment in its flattened condition, not the way it looks on a body
- No unnecessary volumetric effects must be depicted in technical drawing.
- All unrelated three-dimensional information must be excluded or "visually translated" into two-dimensional flat view.
- If garment is created out of stretched fabric it must be depicted the way it is plainly flattened on a desk, not the way it fits the body, regardless of how tightly it fits the body. Drawing of a garment that is created out of stretched fabric must be more closely related to sewing patterns which were used to create the garment than to the actual look of a garment on a body.