I found the leather strips at this link. They come in several sizes and colors to fit your style!
Start by cutting strips of leather the same size. You want them just long enough to hold the bottle when folded. I started by attaching the leather to my planks on one end using the nailer.
Then I looped the leather around and positioned it 3/4” above where I attached the other end. I used my drill to attach the mounting hardware. You can find that hardware in this link.
Finally, just screw the cap on and you're done! You can hang your wine rack the best way to fit your wall. I attached mine with a 3” screw straight through the planks and into the stud in the wall.