is the patterned paper cut to 8x8? If it is why can't you use the yellow as the base and just use a left over strip for the sides?
That is what I am doing -- it is 1 3/4 x 8. I can 't use the 4x12 piece from the bottom, because the stripes would be going the wrong way. I was going to use 1 1/2 by 8 but that didn't work out, so I need one more sheet.