Slide the longer side of the tape into the pull first, then guide the shorter side in.
To give you more specific advice, are you working on a (like a jacket) or a large gear project (like a tent or bag)? Add Zipper Pull on Raw End of Tape Tutorial ShadyLewds_Collection_2019.zip
: Apply double-sided basting tape to the zipper tape to hold it in place against the fabric before sewing. Slide the longer side of the tape into