Here's my sample block with the little cathedral diamond as I call it stitched down in the middle. I didn't even cut the pieces myself (hence the untrimmed sides). Polka dots wouldn't be my first choice for all of the background colors either. These were 5" or so scraps that were in my scrap bin that were somebody else's scraps. Possibilities of this little block are running through my head.
Now that I look at the picture. This post is probably more for my reference right now... It doesn't look that great. Watch the video. You'll appreciate it more.
Found this one on facebook: