Very hard for me to visualize.
Part of the problem is that this is quilted as you go? So it isn't so easy just to put in other pieces in other places.
If you are only out two squares, I'd suggest putting in something entirely different, like a related solid in both places, Basically the color of whatever should have been there. You can use one for the typical Linus label your group uses, and maybe a second message/quilt name or something in the other.
Likewise, if you have any of the fabrics left but just too small you can frame those pieces, or maybe a simple shape or applique related to the pattern on the front.
All is not yet lost. Sure, some solutions are more or less ideal.
Figuring out the pictures issues here are tough for many people as well. Wish I could help more than my problem is with file size and I reduce here -- it doesn't address the token issue so I can't fool around with potential fixes.
https://www.reduceimages.com/