Leather Martini Henry Cartridge box and Dispense Pouch

I want to make these accessories for my Martini rifle ----- can anyone on this forum assist with the specifications ,drawings , etc, as I am unable to locate much info to get me started . Many thanks .
MZZLDR

https://www.southerncrossmilitaria.com/allied.html

https://www.amazon.com/International.../dp/B004JEMHTU

https://www.bing.com/images/search?q...ouch&FORM=IGRE