All of my tutorials are e on my blog under the "sewing and other tutorials" link. Here's a direct link for this particular one: www.sewcanshe.com/blog/2015/3/27/easy-peasy-drawstring-backpack-free-sewing-tutorial?rq=drawstring%20backpack
Hi! If you visit my website and click on the sewing tutorial tab, you'll find my tutorial.foe the bag. I actually used somebody else's pattern and didn't want to steal their work, so I linked it in that post 😊 www.sassycassysews.com
What do you mean it asked you to "add on"? If you are unable to download the file, you can follow the tutorial from the website. I know it's easier sometimes to have the paper in front of you. Maybe try downloading again. Good luck! 🤞