^quake has got the procedure bang-on! That's how I do it as well, and its basically the most efficient way. Pretty much, it comes down to practice (i know, its a bloody, mind-numbingly booorrrring task). Make sure you take your time initially with the folds. If you rush it, the tickets will just tear and not come off cleanly, meaning you'll take 10x longer to do it (especially when there's a pile of 500-1000 of them for you to put up by yourself)
Seriously, there's an art of putting up tickets lol. It's an exclusively retail "skill" passed down through the generations haha.