Hi! I've noticed you're trying to use Italian words and phrases while RPing Italy, but I feel it takes away from the quality of your characterization considerably because it doesn't come across smoothly due to frequent Italian spelling and grammar errors.

Using Italian phrases is a good idea in theory, but for someone who knows the language, it's a bit awkward to read and doesn't make sense in the context of his character.

I think you could easily play him without resorting to his native language -- you've got his personality down just fine, and none of the Hetalia characters really use much of their native languages in canon. It's hard to catch mistakes unless you're a native or fluent speaker, and I think your character is fine without that extra thing to look out for.