An idea always starts with images in someones mind, but these images need a lot of work to make them become alive on stage. In terms of a story, an image catches just one moment, one incident or one behavior in a certain situation.

   A mask has to serve all situations of a story, and what you see should tell something specific about the charakter it represents.
   Technically this means: if you turn the head, it shows a different face, a different emotion.

   And in philosophical terms: things don't lie - a piece of wood cannot betrail, and everybody knows that.

So if it looks like a face, you simply trust your eyes, and reffer to its expressions like a child. And if you manipulate such a piece of wood or clay you become aware that people watching trust their eyes, become an audience, and same as you reffer to its expessions like a child - and they look forward to what you are doing and listen to your story.