You have a lovely top that will be beautiful when it is complete. I see curves, s shape curves, semi circles and/ or feathers in the borders. Meandering with thread that will blend in with white background will complement the writing in the blocks with verses and not disrupt the eye when reading. In each of the four corners you could quilt a cross in a rich, dark color of thread that matches one of the darker colors in the quilt. A similiar style cross, or identical as used in the corners could be enlarged to fit the other three large centers of the stars.