Snap chalk lines to mark where you will nail the boards down.
Use a miter saw to cut the boards. The goal when you install the boards is to have a staggered look. You don't want all long or all short boards. Once each board is cut, be sure to round them off with a palm sander.
Apply construction adhesive to the back of the plywood.
Line the plywood up in front of the door and then nail it down with a power nailing gun raising the subfloor to the level of the cabinets.
Note: Run the boards perpendicular to the floor joists so you can nail the planks into the joists. But since it will actually be construction adhesive holding the boards down, not the nails, it is okay to line up the boards with the joists.
Measure out to the chalk lines to make sure the boards line up straight. Tap in the wedges until the planks are even.
Measure a finger's width from the edge of the board and face nail it in place (Image 1). Counter sink the nails so they do not become shiny when the floor is sanded.
Use square-head smit nails, which give a traditional cut-nail look. There are many reproductions available (Image 2) depending on the look you're going for.
When the nailing is done, tap out the wedges and pry up the blocks. Continue cutting boards and laying down planks.
Cut the boards to size making sure you do not have a sliver at the end, and then lay them in place.
Pre-drill at the end joints so you do not split the boards. Nail the final boards in place.