Question on how to make my own cloth leaders

[quiltingtrish]

If it's normally 54" wide, that will double when I get it home and open it up so that would take care of the length - well, that only adds up to 108, not 120 - but I doubt I will be doing king size - oh, one never knows I suppose. And then the 3 1/2 yards, well that would take care of the amount I would need for the 8, 18, and 24 measurements mentioned earlier.
This is what I am understanding.
Anyone want to just come over - I guarantee a good time!! I'd even let you look at my stash.