Determine the length and width of your pathway.
Excavate your path area to a depth of at least 4 inches, then lay treated wood edging boards held in place with wooden pegs.
Use a level to check that both sides of the path are level (image 1). If not, bed the edging boards down with a rubber mallet. Screw the edging boards to the pegs with a drill-driver (image 2).
Shovel in crushed stone over the membrane surface. Distribute it as evenly as possible, making a layer of about 2 inches (image 1). Rake the crushed stone level before using a rammer to tamp it down (image 2). You can also use a roller to compact the surface.
Pour the gravel into the path area (image 1). Be careful not to injure yourself when lifting heavy bags. Rake the gravel level (image 2). Once the path has settled for a few weeks, it may be necessary to add some more gravel to top off the level.