First off, welcome back Augusto! The greens are quite lovely and the processing looks just fine to me. I also like the slightly off center placement of the waterfall. I like the composition as is, but I could also see a slightly tighter crop to emphasize the waterfall just a bit more. I hope you don’t mind, but here is a rework with what I was thinking. Just my opinion of course.
This is a wonderful, intimate waterfall setting Augusto. The greens are very nice. The rocks are great. I like the crop proposed by @Ed_Lowe, but I would consider leaving more on the left side of the frame to offset the waterfall a bit more to the right.
that’s a great scene you discovered there! My first thought was: Why a horizontal shot? I guess the greenery on the very left and right doesn’t necessarily contribute to the image and its depth. Therefore, I like Ed Lowe’s crop a bit better.
Personally, I maybe would have gone closer to the ground, including some of the stones and the water streams. Still, you could steer the light more to the waterfall itself (coming from above?) and add some extra atmosphere. Just my personal taste, when it comes to waterfalls
