Decide on the course for the walkway by setting two ropes parallel along different paths. Try a direct, angled path and a winding path to see which you prefer. Once you choose, space the ropes four feet apart for a main path and 30 to 36 inches apart for a secondary path. Spray paint over the ropes to mark the outlines.
Dig out the soil from the course with an excavator or shovel until you have a path seven inches deep. Transfer the soil to a low-lying area to build a raised flower bed. Pack down the remaining dirt with a hand tamper.
Place the weed screen over the tamped dirt and secure it with spikes through the corners.
Pour about four inches of 3/4 inch crushed aggregate over the site and pack it down with the tamper until the rocks resist. Adding the layer of tamped aggregate improves drainage and provides a solid base for the granite so it does not sink over time.
Pour three inches of crushed granite over the aggregate. Consider using decomposed crushed granite as the added resin will prevent erosion and preserve color. Level the granite with a rake, and then pour an additional inch so the walkway is one inch above ground level to help drainage. Tamp the granite down to make it firm.