I think it's illegal because since its not in the TSL texture files, you used parts from the KotOR game's textures. I may be wrong but I wouldn't release to stay on the safe side, unless you PM a MODERATOR and they give you the big NO because its not illegal.
EDIT: rearranged words
If you need help with textures on any KotOR/TSL mod, feel free to contact me.
"I like to mod big."
Writing a Story Conversion Mod - 11% Complete