Procure enough bags of quick-drying cement to equal the number of stones you would like to pour. Figure that out by determining how large an area you would like to traverse with your pathway of finished paving stones. Consider if you would like to decorate or embellish the stones as well, as this could lend a difference in the amount of cement mud to mix needed for your particular mold shape and size. A good rule of thumb is to choose a mold that is at least 2 to 3 inches deep.
Dump the dry quick-set into a wheelbarrow mixing container. Manufacturer directions on the bags will advise the ratio of water to dry mix for your application and the product's inherent qualities. Blend and stir the concoction until it is a smooth consistency of thick, pourable mud or quicksand. Make sure all dry ingredients are rendered.
Gather a shovel of the concrete mud, and carefully pour it into each of your prepared paving stone molds. Many gardeners and hobbyists who pour and decorate their own garden paving stones use an aerosol cooking spray or lubricating oil to lightly grease the mold for easy release of the concrete paver once cured.
Agitate each mold when it is filled---but not over the rim---to settle air bubbles and spread the mud uniformly in its mold. Immediately wipe up any spilled or dropped concrete mud, because it is made to dry quickly and is very hard to remove later.
Move poured and completed molds to an area protected from flying debris and foot traffic to cure for the amount of time specified by the manufacturer's instructions found on the back of the bag.