Because it has been WAY longer than a week from now on I will post the rest of the of the posts in steps. Also because it has been so long I will post smaller and easier steps and you can do as much or as little as you have time for that day.
So for this step you will take your 20 blocks you have sews so far. They should be made of 3 A pieces and pressed nicely.
Now you will take the next 20 A pieces you have set aside. If you look back to the last post you will see the block pattern. You will be sewing the A pieces on to your small blocks like shown. Make sure to press. When done with this step your blocks will look like this.