Principles of design

M.C Escher's Symmetry Drawing

This is one of the sample of principles of design from M.C Escher's drawings. As above picture, Escher had used  principles of design such as emotion, composition, abstract, medium, balance, scale.. etc to create the
Symmetry Drawing. Everyone has their own vision, and it depends on which direction he/ she's viewing too.

It seems all the objects are moving around, connecting together, and unify a whole in a pattern. Also there is a few of objects had been laid out the edge of drawing, this makes the viewer's feeling likely the objects closed to him/ her or it's not like a focal point.