The single star quilt was my post. Do you want to have the star bordered, or just the star? I'm guessing WOF would be 40" or so?
If you want just the star, there are 4 patches across, so if each one finished at 10", you would have a 40" star.
Cut the plain squares at 10.5". Cut the fabric for the HST at 11, sew the triangles, then trim to 10.5"
If you want a 2" border, then the star would be 36" for a 40 inch finish. In this case, the squares finish at 9".
Cut the plain squares at 9.5". Cut the fabric for the HST at 10" sew the triangles, then trim to 9.5", then cut the border strips at 2.5"
As mentioned, if you want a single block for a quilt, and you want it to be WOF then 36 or 40 inches are good sizes to work with. Just count the number of patches in the block and divide that into 36 or 40. 36 is more versatile as it can be evenly divided by 2,3,4,6,or 9. For a block with 5 patches across 40 is a good choice.