I designed this to be used as a patch on a Evergoods backpacks velcro section (5x5cm).
I just used some adhesive velcro on the back side biving it a nice contrast, as I have no multi-color printing.
I have uploaded a model with that bottom panel and an other with the inside of the scale pattern in case you want to multicolor print it.
The author remixed this model.
Used just a scetion and scaled it to size.