Definitely a beautiful quilt but such a great challenge. I would first stitch in the ditch around each block. Then find a stencil that will work in the sashing. I use to quilt stars with free motion stitching curves on the two edges of the triangle then arch with a curve to the center, curve back up on the other side, that way you have the center stitched. (you can draw light chalk lines so you have a reference for stitching your arcs. Draw a vertical, the horizontal and the two diagonal line for each star). I would try to find a stencil of a star that would work in the striped bock and show your quilting ability shine there. The border looks quite wide so any stencil you have that will fit. Sometimes simple cables sometimes work the best. You don't want the quilting to interfere with the beauty of the quilt. I have always felt that quilting should enhance the design, not distract. GOOD LUCK!! Any questions, just PM me.