Exactly. If you learn a language in school you learn it in a way that is different from how native speakers learn it. 

Hence you'll face different issues and are prone to different mistakes. So of course won't confuse a personal pronoun and a verb with a single possessive pronouns if you had to spend age learning pronoun tables. 

Second language speakers like us make different mistakes. E.g. we mess up with false friends (Germans may end up saying college when they mean colleague or billion then they mean trillion). 

I think my (written) English sometimes reads a bit pretentious, because I select words that aren't used as much by native speakers. But "big words" are simply quite often the same in different European languages. Hence the translation is easier to remember.