This is Elf's art project. He designed what he wanted to do with his tiles and made a detailed drawing. Then, we broke the tiles and glued them down to the base. He picked just the right tiles for the edges and then "filled" the other spaces with smaller broken pieces. After this dried, we mixed the grout and filled it in. We let it dry 15 minutes and wiped the top. Then, after it was completely dry, we wiped it until it was completely free of grout on the tile surfaces. Here it is, finished! Elf says that it took a long time, but it was worth it. It's a volcano at sunset.