Oh, you've reminded me

@Lowena I didn't give you the size to cut if using jelly roll strips. I'll remedy that forthwith.

What size would you like your finished quilt to be? Do I understand correctly that you want to use 4 blocks to make the quilt so that it us one large star? You can, of course always add borders to achieve the size you want.

If you use jelly roll strips one block swill be 16.5" square (including seam allowances

Each braid will be 2.5" x 8.5"

Small squares for cornerstones 2.5" x 2.5"

Large squares 8.5" x 8.5"

To get the points of the triangles to extend enough so to get the point making the 1/4" seam allowance the square, cut across the diagonal, needs to be at least 9" square. I found it easier to cut all my large squares the larger size and trim off the excess when squaring the blocks.

I hope that makes sense, my head gets confused with the size of triangles needed so I'm not good at explaining it.