One thing I learned very early on with quilting. Sometimes, you have to sew a couple of pieces of your fabric together to make a new piece of fabric big enough to cut that last square/piece. And always cut the biggest pieces first. Another thing that helped me when I just couldn't visualize where the cuts should be, was to cut paper into the sizes I needed and pin them to the fabric. I don't use them as a pattern. They just show me how & where pieces should be placed.
Lowe's has thin wrapping paper for moving and they are relatively cheap. They are about 24 x 30.
https://www.lowes.com/pd/Blue-Hawk-3...per/1000882128
I have been considering using them for some paper piecing that I have to do. I have a lightbox so it just might work.