As always, the non-red and white shows what you'd do if you are making the block and then cutting it in half diagonally. First thing I did was make the flying geese blocks and set up the remaining blocks.
Here is the centre square-in-a-square completed.
Then repeat it for the outer border and the block is done and ready for slicing.
This is what you'll want to follow if you're including the seam allowance for the blocks. Once again I started off with the flying geese.
Here is the middle round added.
And finally the outer round attached. And here is the square with the additional seam allowance.