I have those exact same fabric foundation blocks. Have finished 16, which all the fabric I have in the line of fabric I am using. One thing I did was print more of the pattern on muslin to have extra. If you cut your muslin 8 1/2 by 11 and a piece of freezer paper same size, iron it together, it will go through an ink jet printer. Make sure it is exact size and the top that feeds through the printer is flat.