I paper piece so they come out perfect, but I did see a trick at a local quilt store. The owner who is a wonderful seasoned quilter doesn't cut the block that is making the geese, she just folds it over and presses it down. She said "professional" quilters wouldn't agree it is an acceptable method but that is the only thing she has done to make them turn out right. It didn't add an over abundance of bulk and it kept the bias cuts from stretching, producing a perfect triangle.