Lay out the walkway frame in 8-foot-long sections that are 32 inches wide. Choose two straight 2-by-6's for the outside edges. Cut five pieces of 2-by-6's, 29 inches long, for each section of walkway you intend to build.
Mark the two outside-edge pieces at 24 inches from each end and in the center and position one 29-inch piece between the two pieces at each mark. Drive three 3-inch treated deck screws through the edge piece into each end of each 29-inch piece.
Lay out the frames end-to-end along the course you want your walkway to take. Place a 2-inch-thick, 6-inch-square paver under each corner and the ends of the center cross member of each frame. Attach the ends of the frames together with 3-inch treated deck screws. Use at least four screws in each end.
Install the decking parallel to the long outside edges, working with 12-foot decking boards. Start along one edge of the walkway and install as many full pieces as possible, cutting a piece to fit at the end. Butt the pieces up to each other end-to-end. Make sure that each butt joint is centered on a cross member.
Drive two 1 5/8-inch treated deck screws into each cross member through the decking. Ensure there is 1/2-inch of space between the rows of decking boards by using a scrap of 1/2-inch plywood for a spacer. Install 6 rows of boards across the walkway.