Here is this week's block set out and ready to go. That pile of squares in the corner are for the 1/2 square triangles that make up pinwheels.
I've now added the 1/2 square triangles for the corner pinwheels. I've also started working on the strip in the centre.
Apparently in my enthusiasim I forgot to take a between picture. So, there was a lot that happend to get to this next step. I put the centre strips together. Trimmed them to a square. Then added the middle red border. I also assembled the corner pinwheels like you would a 4-patch. And added the white triangles.
Then, once you've done all that, you'll wind up with something looking like this. :)
Then I added the final corners to wind up with our next block.