This is one Moda used a couple years ago for some honor quilts. It uses the "snowball" technique of a small square on a corner, sewn on the diagonal, folded back to corner of base square.
Cut your 8 white "background" squares at 4.5" square.
Cut your 1 blue "star center" squares at 4.5" square.
Cut your 8 red "point" squares at 2&5/8" square.
Jan in VA