Awesome cosplay but one minor issue, you got the wrong car model year. Johnny drives a 2009 Challenger (Bravado Gauntlet) not a 2018 Hellcat (Bravado Gauntlet Hellfire).
You will need to join the crew go to www.socialclub.rockstargames.com and sign into ur account then go to crews and search for Cobra Kai (Also you will need to be level 10 in the crew to apply the logo to anything)