Okay I had nothing to do so I just took pics of how I do it (since I cant really explain it xD)

1. Stick two regular zigzags together (pic 2)
2. fold a paper backwards like on pic 3 (the glue facing the outside)
3. lick the part of the paper where theres the glue
4. Carefully place the wet paper between the two papers and press (pic 4)
5. Remove slowly before it dries
6. press the two papers together to make sure they stick, and you got your 2 pape, as we call em here (pic 5)
7. Roll a fatty

Hope it helped