No it is not so loud but I have the impression that it is much louder than yours when I listen the videos.
So i’am Wondering if my shape is really right. Because I noticed that when my lips are more forward, like a kiss, then the third space C is more like yours. But then my feeling is very strange and the tone seems to me awful!
Actually it is THE difficulty for me; how much do I have to put my lips forward? How can I know that? What are the criteria?