Here is a tutorial that shows how to turn a separating zipper into a closed end zipper.
How to Add a Zipper to a Finished Tote Bag
Finishing a zipper end for a non-separating zipper
YKK #10 Molded Plastic Reversible Jacket Zipper - Black - WAWAK
Turn a separating zipper into a closed end zipper tutorial
How to Fix a Separated Zipper: 11 Steps (with Pictures) - wikiHow
How To Sew A Separating Zipper: Top-Stitching And Faced Method
PUT SOME ZIP in your sewing projects with these all-purpose zippers by Madam Sew. With this assortment of colorful zippers in your sewing supplies,
Madam Sew 44pcs 18 Inch Zippers for Sewing Garments – Bulk Zippers with Plastic Coil Teeth, Heavy Duty Metal Zipper Pulls and Nylon Tapes – Colorful
Types of zippers – what you need to know - Sewing For A Living
Zip Tips: How to shorten and install a separating zipper - Hey
Types of zippers – what you need to know - Sewing For A Living
Zipper 101: Different Types of Zippers, Parts, & Sliders
How to Sew a Zipper - Easiest Way for Beginners
Inserting an Exposed Separating Zipper - Fit For Art Patterns
How to Choose the Right Zipper