Coincidentally I have spent the past 4 hours trying to do exactly that (learn how to mod so I could recreat a hoodless kylo). I even managed to find the files in Frosty Editor (Probably the easy part), but that's as far as I got. If someone could explain how I would go about editing them and then importing them back in the game I would gladdly spend the time to make it. Edit: Figured it out. Uploading now. https://www.nexusmods.com/starwarsbattlefront22017/mods/1029