Step 3: Pin & Tack Zip On Right Side.
Step 8: Pin, Tack & Sew Right Side
Sew close to the zip at the front.
(In this picture I have already tacked the left side of my zip to the left fly facing)
Step 9: Pin Left Side Of Zip To Left Fly Facing...
Pin the zip shield out of the way & sew the left side.