For the flannel receiving blankets, I use 2 pieces of flannel that about 1 1/4 yards each.I use the width of the fabric for size and try to make them square. I find this is a good size so the baby has some growing room. My daughter-in-law asked to have a receiving blanket that was about 1 1/2 yard long so her toddlers could cuddle in them while napping. I notice they still have those blankets and use them while reading or resting and they are now 9 and 11.