for this tutorial i made my white strip 2". and i would do that again for the next string quilt. it will show off the fabric more. (i think) then you just lightly glue it on the diagonal to the paper.
get a scrap and put it face down on one side of the white strip and sew 1/4" seam.
then iron the fabric back.
continue doing this on both side until your square is full. you need to sew then iron, sew then iron and so on.
when you are done you square should look like this with the extras on each side.
flip it over...
and start cutting off the excess in line with the paper.
when you are done you now need to rip the paper off the back of the square. if will seem like it is perferated so it's not so bad. fold it back and then rip it off.
continue to do this until all the paper is peeled off.
when you are done you have a fabulous square. :) (that's my opinion) :) now i'm not really a teacher but a few of you asked how to do this and i thought i would put my two cents out there. if something wasn't clear let me know and i will do my best to explain it better.