Model For A Large Painting

I was just kicking around some ideas for a painting I am planning to do on a much larger scale than I usually work.  This is basically what I intend to do.  Now it will require a lot of thought to bring out some depth while still keeping it simple.  It will be mixed media - canvas board, watercolour paper, acrylic paint and oil paint.  I hope it works out because I love this concept a lot.  If I screw up, I will try again.