First, prepare the CDs and chop them into small pieces, depending on how large the area you want to cover is. It looks especially better when the particles are relatively small, as this makes it easier to describe the shapes. Now apply a bit of glue to the shard and attach it to the collar of the blouse or shirt. Start from the outside to the inside, i.e. from the edge and corners of the collar, and continue. It works on the mosaic principle. Don't apply too much glue or you'll end up with unsightly stains. Follow the instructions on the glue package and allow it to dry for a few hours.