Hi Bruno.
First off, I really enjoyed this piece, however there were a few improvements I found that you could add.
First: At the very start of the piece, you have chords with breaks in between. This is fine for the start, however, after that beautiful chord sequence, around 0:22, I would add a slow violin solo, to add texture. I would also have the chords roll into each other after 0:22, and not have the breaks anymore.
Keep the violin solo running with the first vocals.
I've got to say, that after the first vocals, the piece really took off and blew me away, it really was beautiful.
After the take off, in the piece, it was perfect, and I cannot think of any improvements that can be made.
Overall: at the moment it's a brilliant and beautiful piece, if you make the changes that I and some other reviewers have said, it will be a perfect work of genius. Good job!!
Hope this helps,
-Phil