I would like make a silk and flannel baby blanket. So I have a 45x45 silk scarf and a piece of flannel, but how should I attach the 2 together? I guess the obvious would be to stitch all around, turn it and slip stitch. But I heard you can do "mittered" corners as well? How would I do that? I'm not a very advance sewer, so maybe thats why I'm having a hard time envisioning it. Thanks in advance.