May I present to you my TF SPORT (OMAN RACING) Aston Martin Vantage GT3 for the 2020 British GT. It is all done with paint work being as close as possible that the game engine allows. I just do not know how to upload it to the Steam Workshop.
you can't just upload a single skin to the steam workshop - you have to make a .rfcmp file (commonly known as a "package" file) to go on the workshop...nice work btw