Hey, I'm back and ready to give you the next step in the Cascadia mystery. I had a very rewarding trip and will be sharing photos soon.
EDITED to reflect no bias edges on the outside. (I knew I should have waited one more day to post!) If you already did it the first way, it's fine- don't change it! Ask me how I know it will work out. :)
So, here we go!
From muslin, white, light, or whatever other color you want to use, cut thirteen (13) 2 3/4" squares, then cut them on the diagonal twice to make 52 total triangles. Sew them, as shown, to a single printed 1 1/2" square. Make 4 of these units.
Then cut four (4) muslin, white or light 1 3/4"" squares, then cut on the diagonal to make 8 triangles. (this will keep the bias edge off the outside) sew to the corner, as shown. Make 4 of these units.
To the three square strips add the triangles from the 2 3/4 square to the ends, as shown. Make 4 like that.
Press, as shown and sew these two rows together.
Use one of your 1 3/4" corner triangles add to the end of a 5 square strip. (this will be your other corner) Add it to the end of 4 strips.
Add your quarter square triangles to the ends as shown above.
Using the rest of the triangles made from the 2 3/4" squares add them as shown to the ends of the 5 square strips. Sew them together as shown. Make 2 of these strips.
It's been a long week with very little sleep, I sure hope this makes sense! Let me know if it doesn't.
Have fun with it!