Hey sweetie! I watched this back and noticed that you do have trouble opening the left side of your mouth, like Dr. Mew said.
Even though you are very busy with studies, I think that you should find the time to post again, specifically, I think you should blog about your orthotropic journey that is just beginning because not many people have heard of orthotropics!
Also, I think it would be very interesting for you to sing this again in three years time after your treatment has finished. I think the change in your jaw strength and position will affect your singing in a very positive way!