I am working on some Day of the Dead inspired mosaics. Here is one completed piece. I had quite a few handmade polymer clay tiles in my stash, but also included some store bought ceramic and glass tiles.
The center image is a old printing plate. The center girl has a three dimensional skull head, and I though the other girls needed skulls as well so I painted over them. The frame was meant to have tiles around the outside and has a separate frame edge for a photo in the center, but I glued the printing plate over that opening.
This really motivates me to make some more polymer clay tiles (until I remember all the difficulties I had with polymer clay!).