Ola Thaiza. To "wear your heart on your sleeve" is more for a person who is always openly emotional, not really on a momentary basis. ComplIment - elogiar. ComplEment - complementar. "Someone that" is ok, but when talking about a person, it's more common to say "who". It's sad that it was a kid who said that, not an adult, but it's better than nothing! Keep practicing. Simón.

Your English is incredible Thaiza. I really nitpicked so it sounds as natural as possible, but your original wasn't incorrect at all. I hope this helps! ☺