I stayed up late and finished the fifth long vertical row. I think the black and white side triangles are going to do what I want them to do. But then I noticed this: See that long narrow green triangle at the top? It's supposed to be pointing DOWN, not UP. Oopsie. HOWEVER... That is such a COOL shape! I am going to have to play with that in another quilt! (See: even mistakes can be inspirational!)