It comes in a strip like this with a hole every 5 nail heads. You just take a tack and nail it in the hole through to your piece of furniture. You get a nice, straight even line of nail heads!
I recently bought this little twig stool at an auction, but it really needed a new upholstery job. Sorry, I don't have any before pictures. I just wasn't thinking!! Here it is with its new plaid top and nail head trim.