I worked for months on a hand applique needleturn quilt. It's for myself ( 99% of mine are donation quilts). I used a fleece blanket as backing, and there's 80/20 in the middle. A light custom on my longarm and the quilt came off the frame lovely and straight, and lay flat. However, l must've stretched the edges as l sewed on the flanged binding, because now the borders ripple. Do l care? Well, yes for photo tsking and such...but no , not for anything else. It's wonderful to snuggle under, and the pretty florals, bees & birds in the blocks make me smike. I'm not " fixing" it. Who knows, maybe after washing all will be " normal" 🙂