The first one I felt like I gave birth to it! This one is for someone else, so I didn't prewash the fabric since I'm a bit OCD and want it to look "new". When I measured I gave about an inch allowance before sewing, did the hem etc.
It was just to spendy to order pipe from someone so scouted 3 stores before finding an irrigation pipe company to purchase from, and no way I could use that much pipe! So thought maybe I'd try my hand and make some to go with my swings, since people like the matchy type of stuff.