What I have learnt from making a Mosaic Heart. Any shape cut from a Mug has to be quite small to lay flat. Mugs vary in thickness which is a problem for a flat Mosaic. Bits of China fly off when cutting so you must wear Goggles. Tiles slide when you are not looking so adjust them before the glue dries. Tweezers are useful for placing small tiles and dipping them in glue. Toothpicks are useful for positioning tiles. Plastic gloves protect your hands but get in the way. Time flies making a Mosaic !