@MariaAgnes84, what @EA_Barry meant was that it is not possible in The Sims4 to have heterochromia for human Sims (only dogs and cats if you have the Cats & Dogs Expansion Pack) if you are only playing with the game as designed by EA. So, the only way you would be able to make a Sim that had eyes like yours is to download some Custom Content (CC). CC is not something that EA makes, but rather something that fans of The Sims make to enhance their game! 😉 EA allows it, but does not work with it, so anytime EA updates the game, you would have to make sure your CC is also updated so it won't mess up your game! (I'm too lazy to do this, so I don't play with CC or Mods anymore and haven't since The Sims3 😳 ). So, it is up to you and the maker of any CC item to keep it up to date. There are many sites that offer CC for The Sims 4 (I'm not allowed to link them, but you can do a Google search). There are some really amazing creations that some people have made for the game! 🤨
However, at this time, if you are playing on a Console like PS2 or Xbox, CC is not possible yet! ☹️ I'm not sure if EA is working on this or not. So, for now, CC is only possible if you play TS4 on a PC. 😉
I hope you are able to make a Sim that looks like you! Feel free to send pictures of your Sim if you are able to do so!
Happy Simming! 🥳