1 Paint the box and the box lid with opaque craft paint and leave to dry.
2 Attach glass mosaic tiles and buttons onto the box lid with glue. You may use a jewel picker for picking up and placing the very small glass mosaic tiles onto the glue. Leave to dry completely.
3 If you want a coloured joint, mix a bit of craft paint with the mosaic grout.
4 Distribute the coloured grout over the glass mosaic tiles and buttons, working it into the gaps.
5 Wipe away excess grout with a damp cloth or sponge, so that the glass mosaic tiles and the buttons appear clean once again. Leave to dry.