She gives all the requirements and cutting the strips etc in the very beginning.

I completely agree. THe pattern is designed to fit the fabric so it works great for a layer cake. Regardless of the quilt police I think sashing and cornerstones can be whatever you want it to be.

Oh my that is a lovely quilt...I have to catch up a little more of UFO before I dare even look through my stash to make one... :). I think the sashing fabric is the background which she gave yardage for and the 2-1/2 square are left overs from layer that the center 4-1/2 inch squares were cut.

Judy in Phx, AZ

I agree completely. With layer cakes, all your fabrics are already coordinated for you.

It looks like she used the left over 10" squares that she used to cut the center of each block for the setting sashing squares

I made the Quatrefoil quilt but used yardage not precuts. I used the fabric from my inner four patch for the cornerstones to complete the design when sewn together. If you put a background for the cornerstone you do not get a pattern where the corners meet. It makes a beautiful quilt and I love mine.

ive noticed that in some videos she says the number of blocks for the size quilt she's demoing, and if she does this she often gives the number of blocks or rows needed for other sizes. In others, like the Quatrofoil Quilt she gives the number of blocks in each row and the number of rows for the demo quilt. (Towards the end she says 4 in a row and 5 rows-so 20). This usually seems to happen with quilts that would most often work as a lap or any size bed quilt. FYI -for all MSQC fans: a nice feature on their website- go to the tutorials section and find the one you want. Below the picture is a written description with a "read more" link. Choose that and it will have the fabric requirements, a picture of the block featured and the precuts and yardage she used plus some alternative yardage choices. Adding this to my "definitely a pillow to try the block" list, then maybe one of my quilt lists.

This has nothing to do with quilt police. It's your quilt, and you can do what you like with it. But if you make sashing with leftover 10 in. squares, it will not have the pattern that Jenny has. I really don't think you would like it. To make the quilt turn out, the sashing needs to be the same as the background fabric in the 4-patches.
Happy quilting

Great quilt and I'm always looking for patterns to use my pre-cuts. Isn't Jenny great! Susan

I agree Onebyone. I get a lot of layer cakes. If I had to coordinate all those colors I would never get anything done.