Hi Pollytink: Sorry to give the wrong impression. I did not find the tutorial because I watched the video so I knew the basics, all except the correct measurements, which was pretty important! I did find a post with the correct measurements, 8.5 long X 4.5 wide. If you go Home here then go to the section "Tutorials", then do a search for "5 minute block instructions". I know I saw a link in one of the headings, think it was on the second or third page.
Here is the YouTube link and she shows you how to do the block. It was much easier for me then reading a tutorial. Hope this helps.
Penny
http://www.youtube.com/watch?v=TIxl3af3lzY