I think you make a blog was a good idea. Write and read weekly post companions, has allowed more integrated into everyday English, and allows a better understanding on different aspects classmates and learn from them too. 

Personally, I think I could learn and integrate new words to my vocabulary, and improve a little in the grammatical structure of the language, although I still have much to learn.

For the future I think you should keep using the tools that are used to us, but it is always good to innovate with creative things such as singing a song in English, I sincerely believe that you learn a lot with that!

I think the only negative is the class schedule,  considering that I personally start classes at 8:30 am, then to English classes'm running my last daily energies, so I often do not able what I would have liked, but fatigue much.

I think the blog is a great learning tool, as it allows to discuss many topics, and meet many opinions, I think many of the issues that were posted it funny, maybe include typical places of the city of Santiago, favorite music, favorite actor, favorite film, or just to have the opportunity to write about whatever you want.