You are so right Holice, if your seams are not accurate, it is very hard to have a pretty seam. I like to start with a 2" strip. I also square my quilt using the rotary cutter and a long ruler. It's much easier to sew on a straight binding if your quilt is straight as well. I use the Perfect binding miter tool from Quilts and Stuff, and I do get perfect corners. and at the end, well it's all about the overlap and knowing your machine. I do love to bind.