I got the idea of doing that from the aqua vessel. I fucked around with it way too long, and then I used cotton cord to run 5 or 6 rounds of gathering around the upper half and then left it to dry.
The next morning, it wasn't dry. Maybe I should've waited, but I didn't, and I took out the stitching and it was a mess. Again, I fucked around with it, and turned it inside out.
And in the meantime, I make little pins, which makes me very happy.