I've picked up some ripstop nylon with the plan to do some sewing machine practice and make some stuff sacs. I can find details on making your typical round ones but I'm looking to make something similar to one of the Treadlite peg pouches with the zip along the centre. All I can find looking through youtube etc are details on ones with the zip along the edge or that are box type pouches. Any ideas where I might find something that works? Thanks.