Lay out the footprint of your patio using baking flour. Baking flour is a safe and environmentally friendly alternative to using spray paint.
Remove the sod and dirt inside your patio boundaries to a depth of 6 inches.
Dampen the earth inside the excavation with a garden hose.
Tamp down the dirt using a tamping tool.
Place a piece of plywood sheeting against the ground.
Place a carpenter’s level on the sheeting to check if the ground is level. If the carpenter’s level will not level, you must excavate more soil and repeat steps 3 through 5 until the soil is level.
Shovel a 2-inch layer of gravel onto the dirt and compact the gravel with the tamping tool. Check that the gravel is level by repeating steps 5 and 6.
Lay a 3-inch layer of course sand onto the gravel. Smooth with a shovel and then tamp with the tamping tool. Check that the sand is level by repeating steps 5 and 6. The ground should now be level and prepared for your stepping stones.