Pretty good, Eliza, your ideas here flowed really well from one to the next! My corrections are mostly for clarity. I know in other languages "I don't have it clear" would be a literal translation, but in English, native speakers say "[Something] isn't clear to me." Another point is that while "it" or "this" is generally acceptable, if there are a lot of things mentioned in the previous sentence(s), it helps the reader to understand by clearly, briefly noting what "it" or "this" is. Finally, I suggested splitting the final sentence as otherwise, it would have been a bit too long for easy understanding.