I was sewing decorative buttons onto a quilt top, and made two discoveries:
1. Don't sew the buttons on until AFTER you have quilted the area, and
2. When attempting to sew on a button, put the fabric into an embroidery hoop. It just makes things easier.
However, don't attempt #2 until you've read #1. Ask me and my seam ripper how we know.....LOL