This is one of our edge blocks so, you have a choice. If you decide to add in the 1/4 inch seam allowance, you'll want to make it following the red & white block. If you decide to make the block and cut it in half, you'll follow the orange and white block.
Here is the block set out and ready to go.
Here I've started adding the triangles to the middle rectangle and the posts to the remaining borders.
Then, apparently, I somehow blanked on taking more pictures. So, I added the remaining triangles to the borders. Then added the borders to the centre. Resulting in our next finished block...
If you making the whole block and cutting it in half, you'll follow this:
Here is everything set out and ready to go.
The centre square-in-a-square was done using this technique. I've also added the posts to the remaining borders.
I then added the borders to the centre, to finish the block.