Wow, Vincent, this is so incredibly beautiful. I was going to attempt a comment in french, but I fear my french is not yet good enough to express how much I like this. This is really one of those shots, where you cannot critique at all. It's wonderfully framed, you chose a great view, and it is sooo colourful. I'm really enjoying that. At the same time there is a lot of structure going on in these rocks, which gives the eye a nice amount of detail to look at, before river and the line of the mountain lead it on to this gorgeous background and this beautiful white peak.
How come actually that the water is so bright? Was it salty somehow, or was there a bright sand underneath? Or did you simply use a grad filter that darkened down the sky, but not its reflection in the water?
In any case....c'est très très bon travail, j'aime cette image. Tout simplement parfait.