I finished my borders today. Pressed the heck out of it and then laid the whole thing out on sheets on my deck to spray baste. I had puckers on the back when I got done (still learning) so I took an ext cord out there n ironed the heck out of it again. No more puckers. Decided it might be a good idea to pin baste lightly so just finished that task. My knees hurt! Ready to start quilting tomorrow. Wish I had read further b4 starting n I would have taped the back down, employed someone besides myself and I think I would have eliminated the puckers prior.