Lay the paving down, working in an area of about 1m (3 ft) square at a time. Fit the pieces together like a jigsaw, keeping the gaps small, and then re-arrange them until you are happy with their position. You may find that you need to trim some pieces to size. It is usually best to place the large pieces first, and then use the smaller ones to infill the gaps.
Check that central slabs are level with the edging pieces and bed them on sand or a 5 cm thick bed of mortar (10 parts grit sand to 1 part cement). Use a mallet or a block of wood and a hammer to bed each piece firmly in position. Test each piece to ensure that it doesn't rock or move; lift pieces and remove or add mortar or sand as necessary until they are firm and level.
