[Mod Request] Edit a texture, add back part of a mesh or offer advice on how I can do it myself

[Singitformehal]

I would like the knife from the shirt outfit to be visible on the Kaer Morhen Armor.

I don't want to use AMM, fortunately there are two mods that allow this, however they each have their own problems I would like some help in solving.

This mod - https://www.nexusmods.com/witcher3/mods/3356?tab=posts

is perfect, however the author has chosen to also use it to remove the sword harness that visually fastens the swords to geralt's back. When asked by someone if he could provide an alternate version without these changes, he basically said "Learn how to do it yourself." Which is fair enough I guess.

This mod - https://www.nexusmods.com/witcher3/mods/4269

adds the knife as an equipable pocket item but uses the updated black textures used on AMM retexture mods, it doesn't fit with the Kaer Morhen armor, ideally I'd like the original textures.

Which is easier? Add back the harness in mod No.1 or reverting to the original textures in mod No.2?

i've never edited a mod before so any help would be greatly appreciated, with a little guidance im happy to do all the legwork and then send the files to anyone who would like to use the mod when I'm done!