I have made a lot of burp cloths and usually use the flannel that JoAnn's puts on sale to keep the cost down. It has juvenile prints. I can get four cloths out of a half yard. I make mine in an hourglass shape with rounded corners. I use the flannel for the front and back and a cotton quilt bat in the center. I sandwich the flannel and bat together before I cut the burp cloth out and sew it wrong sides together like a rag quilt. I use muslin for the pattern so there is no pinning necessary as it sticks to the flannel. After sewing I trim the bat close to the stitching and clip the seam allowance and when washed the edges fray. I also stitch once across the center to hold the layers together. These burp cloths get washed a lot and are still going strong after multiple babies have used them. I use the same technique to make larger changing pads. These have rounded corners but are not hourglass shape.