Her is my version of the belt pouch pattern. It is based on a 5.625" rope belt and 2.5" pouch belt, the photo was brought into CAD and scale to these dimensions and this is the result.
I haven't tested these yet, but you are welcome to them. If you have any questions let me know.
Print at 133% at 38 pixels/cm to get full size templates. But remember to scale them to fit your build, they should be in proportion to the rest of your equipment.
I have added a PDF File attachment for the medium sized patterns.