Step 5: Yay- your pattern!
Well done- that bit was hard work!
The circumference of the sole seam line should be the same as the curved sides of the toe and heel piece added together. You can test this using wool to measure the curves (obviously not slack like in this photo!
If you are nervous about your pattern or have very precious fabric, you may want to assemble the pattern to check that it works. Follow the ‘assembly’ step but just use a running stitch because it’s much quicker.