ZBrush as a Character Design Tool - ZBrush Creature Design: Creating Dynamic Concept Imagery for Film and Games - page 58

The second compositional device I employed was the triangle (in yellow). I wanted the White Fox to be
a dominant and formidable character, so by splaying her dress and positioning the arms, I created a triangle
composition that gives a sense of physical strength and stability. It also serves the purpose of leading the eye
to the primary focal point of the picture, the White Fox's face.
I also made sure that the horizon line (in orange) was perfectly horizontal to emphasize this stability, and
by adding in receding floorboards, I was able to build a sense of depth into the picture.