I HAVE NOT TRIED THE METHOD THAT YOU HAVE LISTED FROM PENNY HALGREN. I USUALLY ONLY MAKE QUILT AS YOU GO QUILTS AND LOVE THEM. I MAKE ALL MY BLOCKS ABOUT 2 INCHES BIGGER AS THEY SHRINK WHEN YOU QUILT THEM. THEN I SQUARE THEM UP TO THE SIZE OF THE FINISHED BLOCK I WANT AND ATTACH THEM WITH THE SASHING METHOD. MY FAVORITE WAY TO MAKE QUILTS AND HAVE DONE 2 PHOTO MEMORY QUILTS IN THIS METHOD AND THEY HAVE TURNED OUT GREAT AND QUICK. GOOD LUCK WITH YOUR PROJECTS.