REQUEST: Tutorial for Modding Jerseys

Hey everyone, I'm trying to create my own jersey mods. Nothing special, just a few color swaps and maybe some retros but unfortunately there are no public resources that I am aware of on how to properly import modded jerseys into the game. I am currently working on the Hornets OKC Valentine's Day jersey but have ran into error after error. Also, it'd be very helpful if there was a template out there since I can't figure out how to cleanly remove pre-existing assets.

i would be down to help if we get a template and directions on how to import into 2k18. Alot of great gems missing.