Sorry I can't help you, I googled and found these instructions:
http://www.oocities.org/heartland/fl.../blizzard.html
Is that the one you are talking about?
Since it's scrappy, the lengths will differ, hmmmm...I can visualize how it sort of looks, but I think it's one of those things that you just let go of control and sew without worrying about the end result.
Something an instructor taught us once was to play with crayons, sometimes sketching it out and colouring it in is enough to help those that can't picture it in their head. Hope that helps,