You trace those to the lining and outside parts of the purse and then you cut those little squares out after measuring them They are 2 3/4" each and then youtrace that onto you lining and ouside pieces before you sew them together. This is where you will "boxing" the bottom of the purse. Like the abouve poster had said there is a tutorial on making this purse in the tutorial section. Have a great day.....Note: The measurement is fot the large purse so I'm not sure what the,small one is. Huggies, Fay