First, you need the foamie sheets. Glue, both regular white glue and the tacky stuff work well. I use spray adhesive, following their directions, to glue the images onto the can or box, but the white glue works, just takes a little longer to dry. I use a box cutter to cut the foam sheets into tiles, and scissors to cut out clip art images. After gluing onto a can or box, or sheet if doing mosaics, the project is grouted using regular grout. I tried both sanded and non sanded, colored and plain white, and found the best use was from the unsanded white.