The mirror pieces reminded me of regular mosaic tiles, so I attempted to transform the three-dimensional horse into a flat mosaic. I used the smart-blur filter to extract the edges, then used them to cut up a solid version of the horse into pieces. An emboss style was then applied to the resulting 'tiles'.

The outer ring of tiles was added by hand -- I used a selection of the intact horse, expanded it, then subtracted the original figure, leaving a uniform-width ring. I added a stroke around the entire selection and then drew in the cross lines to simulated tiles. These lines were then used as before to slice up a color layer and an emboss style was added. The background was constructed in the same fashion using the tile fill pattern.