Before anyone asks, yes, I have read the ToS, I just don't really understand it. If I want to upload a Skyrim armor retexture, for a mod, using another mods textures as a base to create my own mod on (not completely changing the look, but things like recoloring the armor and adding new details or renaming a mods books, spell tomes, or arrows,) I have to get permission from each author to use their mod and textures to create my mod? And, what if the author whose mod that I want to create my mod for shows no signs of being active any longer?