This seems odd to me, but it works. According to Jan Krentz and Alex Anderson (Star block queens), you could press the seams open in these cases so that way there is much less bulk all the way around. I thought crazy, but when I was doing my star quilts and 8 point stars, they were correct, made it lay much better. I do only press when the block is assembles. I do mean PRESS. not iron. I also do not use a lot of steam, it seems to distort it on me. Once my quilt is assembled, then I do some steam pressing. Libster has the center right. Eleanor Burns has a You Tube video on it and I think a couple other people do as well if you do not understand the directions that Libster wrote so well.