Establish a Base
Every driveway needs a solid base so it doesn't sink or crack. Start with a base of large gravel, and as it's being spread out, spray paint to the guideline to indicate the radius. Next, spread a base of limestone sand in the area that is marked for the walkway. When compacted, this sand will lock firm and hard, and since the walkway will hold foot traffic only, it doesn't need a stone base like the driveway. Place a layer of small gravel on top of the "base" (larger) gravel in order to level it out and add strength. Put in approximately 8" of big stone gravel, followed by 3" of smaller stone gravel called #1's, which means they are 1" and smaller with dust in them so they lock extremely well. Then top it off with 15 tons of limestone "locking" sand. The limestone is actually crushed from stone, and it turns almost like concrete.