Originally Posted by amma
Is the fabric on the bottom staying lined up with the fabric on the top when you are sewing the seams?
Are you maintaining an accurate seam allowance?
When you have squared them up, is the diagonal line coming out accurately to the points on both sides?
Are you carefully pressing the seams? no hidden creases or stretching of the fabric?
Amma has it, these are always the problem, ask me how I know. I was making a feathered star and I just couldn't get it, it was because I wasn't watching that I kept the ruler on the 45.