Diva Challenge 376 - Mosaic

My take on the challenge this week was to use four tiles and create a mosaic.  Loved the idea.  Was happy with the result:

I used bijou tiles.  One thought was that if the strings were drawn from the center of each tile/side, the tile itself would become the reticula and some interesting meta patterns could be created.  (Probably don't need the center point for the string.)