With the Marion stitch you get horizontal lines over the Mochila stitch. I advice to only do the Marion stitch over one or two Mochila stitches. If you would do the Marion stitch over more stitches, something could get stuck on the yarns and that will ruin your bag.
The patten for my Mochila Mystery can be found here, https://www.ravelry.com/patterns/libr...
Check me out on Ravelry
https://www.ravelry.com/designers/mar...
Or visit my website
https://www.marionverloop.com
Left handed version of this video: • Mochila with Marion Stitch left handed