This is one of my completed paper foundation pieced log cabin blocks. Note the wide, uneven, margin of paper all around the outside of the fabric. Although the foundation will remain in place until I join the blocks together I fear this wide margin will make that joining near impossible.
I line the first quarter inch mark on my ruler up with the printed outline on the foundation and trim with my rotary cutter.
Here is a complete unit. Colour matched log cabin blocks sewn as a four patch block in a setting that I have seen called sunshine and shadow. Only a few more to go before I have something nearing the size of a cot.