I totally forgot to say that the first thing you MUST do is cut a tiny piece of each of fabric and glue them to a piece of paper in the order in which you want them to appear on your quilt. Number them on that piece of paper! You'll be referring back to it many times.
quiltsRfun is absolutely correct in recommending that you label each (secondary) strip as you cut it. If you don't, you'll go a bit crazy trying to assemble them in order!