Always plan the design and layout of tiled floors on paper first, especially if you are going to mix shapes and designs. Take account of the fixtures and fittings in the room as the design will have to work alongside these features. Try to avoid patterned tiles at internal corners where they will have to be cut and the beauty of the design could be lost. Also try to avoid using a quarter or less of a tile on an end wall, as the small parts are very difficult to accurately cut without breaking the small end section. Remember to remove an inward opening door before starting to tile the room because the tiling will raise the level of the floor. Adjustments will be required before re-hanging the doors. Also remove any cupboard doors at floor level before starting.