Score the 12" square card stock at 4" and 8". Turn the paper to the unscored side and repeat the scoring. You will now have a grid of 9-3" squares. Score the outer 4 squares (upper left, upper right, lower left, and lower right) vertically at the 1", 2", and 3" lines. This will give you four sections that have four strips. If this doesn't make sense, refer to Rachel's original tutorial so that you know which squares I'm talking about. Cut each of the score lines like Rachel does in hers. In each of the two center panels between the sections with the 4 strips, cut a triangle like she does.
Fold along all score lines and begin to assemble your basket sides like Rachel shows you. Instead of using any adhesive to stick these to each other, I just held them all together and punched a hole through all the layers using the smallest hole punch on my Crop-a-Dile. Then I used a brad to hold them all in place. This goes a lot faster than using adhesive, and works just as well! If you don't have a Crop-a-Dile, then use glue dots. I recommend the large size, since there is quite a thickness of card stock resulting from all the layering. I used them on the small basket too, with equal success.
The dimensions of this basket are 7.5" long, 5" wide, and 3 5/8" high. The only limitation to what could go in this would be the weight the basket could hold. I'm going to use mine to give cookies to a new family that moved in during the week!