Hi Toni! Welcome to the group! Echo quilting is simply following an outline pattern. If you appliqued a circle, the first line of quilting would be "in the ditch" around it, the next row would be done an inch or less around that to make an "echo" and continue in equal spaced rows like a quilted bull's eye. It's the style most often seen on Hawaiian or Tahitian style quilts, it reminded the island women of the ocean waves that surrounded them. It's not unique to Hawaii, but it is the most common quilting pattern found there.