Making face shape descriptions easier to follow

Lucashew

Our costume group keeps using oval in two different ways while planning a decorative mask workshop. Some volunteers mean the outline of a person's face, while others mean the shape of the template. It would help to settle the wording before everyone arrives with a different interpretation. I am considering face shape measurements as a starting point for that discussion. A label might help the conversation, but it should not replace checking the actual dimensions. We have started with notes about overall proportions, cheekbone width, and the lower outline. I need a clear way to distinguish observations about shape from measurements for an individual pattern. We can make paper mockups, so there is no need to settle every detail with a category name. How would you explain this without turning a simple introduction into a long lecture?