- For me to create this mosaic, I decided to choose an image that had lots of color and I wanted to do a sunset regardless of anything else in the photo. But to start, I took strips of transparent and opaque glass and broken them into pieces with a tile breaker and then placed the pieces in order and then glued them down. But before I glued them down I needed to make sure there was enough space between the pieces so the grout would be able to rest in there.