I think that is a very good oportunity to have English at university, because I didn't have it since school so I lost the practice. Now, in English IV im trying to use it again to get better in fleuncy, pronunciation and grammar.
When I do the blogs, I try to express myself like I'm talking on my first language, because Spanish and English have differents structures so is hard to translate literally. Therefore, I use translator as little as posible and I try not to depend on it. The blogs are a good experience to think about me and the things I like, expressing myself to others. There are good to practice my grammar and vocabulary. 
I think there are many aspects that I want to improve of my English. Principally, I want to get better at pronunciation and vocabulary, because I think this two aspects are essential for the communication with other people. This aspects are very important for me because I want to travel and English is a very good tool to communicate because of their universality around the world. Despite that, writing and reading are very important for me too, because they are useful for academic texts and papers, that are very used at my carreer. 
Outside class I don't really use English so much but I'm trying to use it more: listening songs, reading on internet and speaking with foreigners when I can. I usually read texts and papers in English, and sometimes I read books of my interest in this language. Ocasionally, I talk with people from other countries in English by internet.