Grand_Commander_Umbra

Hello, I am new to this forum for the Spec Ops Storm Troopers. I am making a Shadow Stormtrooper Costume and I have a few questions on measurements for certain parts, So far I am currently working on the legs and trimming up more pieces for the arms. What are the recommended thickness measurements for the Hand plates? and What would be the minimum length Should I trim the Lower Legs before Putting on the Black Construction strips?