I finally put together a triangle star following Victoria's tutorial. I have to admit I had problems and despite my best efforts, the center section puffed up. I took it apart and measured it again and again. Somehow, the central green triangles I used were too big for the top triangles, so I trimmed them down and tried again. That worked. I got it together. It is still a wee bit puffy in the middle, but passable for liberated me. Here it is.
I have another set of triangles cut out for another star... I love the look of this block. Hopefully this next effort will go together with NO problems.