So you want to practice your writing? Why don’t you start writing a daily diary?
You could use an app like Diaro or Penzu so you can access it anywhere. I guess you could also start a scrapbook with Pinterest too. And don’t forget to use Facebook and Twitter as great ways of staying in touch with your friends every day.
If you want help with academic writing then use the Academic Phrasebank from the University of Manchester or Academic English Online from Queen Mary University. Remember to use these phrases to give you ideas to improve your own writing. Don’t just copy and paste, because you’ll never learn that way!