Step 6: Sew the Side Seam
Lay the piece you just made on the vamp piece(or vice versa).
Sew them together the same way you did the heel seam.
You don't need to hem the top of the sock, it won't unravel.
Hem the top of the sock if you want, or trim it with whatever exotic furs you have handy.
Enjoy your cozy new socks!
Make a whole lot of them and invite your friends to go winter camping!