This is obviously against the official system. You'd better not learn to do it, otherwise it will be detected by the system and you will be banned for 30 days. As long as you are banned for more than 15 days during the season, you will be disqualified from receiving season rewards. A friend of mine worked hard to add diamonds, but because he wanted to use the skin to defend himself, the modified file was detected by the system for 30 days.