I bought a 1/4 inch foot for all of my machines - that has helped so much! They weren't expensive and I have found that my quilts come together so much easier. *** Also if you quilt block has many seams use a scant 1/4 inch a few threads smaller seam. When there is a lot of seams the fabric pulls tighter together and you nees to be stingy with your seams. I hope tha makes sense.
Happy sewing adventures!