I have a suggestion. Just be accurate first in purchasing material. # 1. Don't use stretchy fabric unless you use it all over the quilt.# 2. When cutting your pattern, make sure your cuts are accurate. (try the block first as the templates request, some templates are slightly off). If they are off, even an enth of an inch, it throws the whole block off. # 3. Make sure all your seams are accuratly measured. Any diviation of this width will cause a problem.
# 4. Slow down! It took God 6 days to creat the world and on the fifth day, He rested.