Choose an oversized tee (preferably w/out seams on the sides) & lay it flat out on the ground.
Cut out horizontal strips of the shirt up to the bottom of the sleves.
(leave out the bottom hemn line and save it for another project.)
Stretch each strip to give it that rolled look.
Double up the strips by twisting them and bringing them back up.
so the count of your strings should be doubled.
Take one of the strips and cut it to make one long stip.
Play around with the length of the strings and your done.
Go rock it!!