Wow that is totally clear and appears like I can actually do this. The only issue, I already sewed the pieces together. I only sewed to the 1/4" seam allowance because I knew I would have to add something. Can I add the side and corner triangles on now or will I mess it all up? can you tell this is my first "on point" and I am new. I have only done about 3 quilting items.