Thanks for your comments. Actually i did hardly no editing on this image : i didn't manipulate the water, the motion blur comes from the time exposure (about 1/2 second). The only "skillful technique" was not to move at all for 1/2 second, because i had no tripod...
Corcica must be a wonderfull island, i am sad to say that i have never visited it.
Therefore all the more thanks for this incredible beautifull waterfall scene.