PP
What I have seen of the pics you have posted you are very talented and a confident quilter, why are you afraid of diamonds? Have you ever tried the diamond strip peicing technique? You sew strips in the series of colors of the star points and cut the stips at a 45 degree angle then sew the newly cut strips together. I will fire up my digital camera today and post a pic of my lone star quilt (aka Star of Bethlehem) done with this technique. It was mega-easy and the top pieced together in no time, can't say the same for the quilting (I hand quilted it). The only set in seams were the squares and triangles that formed the background.
I learned this technique from the book "Quilts! Quilts!! Quilts!!! The Complete Guide to Quiltmaking" by Diana McClun and Laura Nownes.
FF