I just recently found a Great blog for making it... It is the Plaid Scottie... I do not have a link but I am sure you can google it.
there was a quilt along with Great pictures and the pattern is attached.. It is part pp. which I love... I have not started it yet but it is certainly on my todo list...
Hope this helps.
Oh.. the King size.. you would need to make more rings to increase the size.. that is what I was planning to do... sorry about that