You should see a screen like the one below. You should get a little notification when it is finished. Find the folder that your mod is in - replace the Diff, Norm, and Spec files accordingly.
When you click on the folder, a bunch of images should appear on the right. Once it is finished, you should get a bunch of folders in the left hand column. The database will need to populate and this takes a few minutes, but luckily it only needs to be done once. Select a different mesh and then go back to the CTHk mesh - you should see that it has changed into the armor you uploaded. Close the window not the big red X in the upper right hand corner but the little x below it and you should see the mesh screen again. Select the item on the left column and you should see LOD 0 appear in the right column - select it.
You should then see a screen like the one below.
Open up ME3 Explorer and navigate to Meshporer: 2. You just download the Texmod program and run the. So here I am sharing my limited findings so you can make your Shep as badass as mine : You will generally encounter three types of mods and the programs you need to use them : 1.