Thanks guys! I'm not sending this out to a long-armer. I actually made this QAYG and wasn't thinking about how the seams that are pressed open on the back (so it'll lay flat), would show through a lighter colored backing fabric. I had originally bought some regular 108" backing for it but later saw my mistake. This is why I have to order something darker to cover up the top fabric that shows through the seams.

Thanks for the heads-up on the Robert Kauffman app - I'll definitely download it to my iPad.