I like the image very much, but two things hit me FWIW. The horizon is a tad off horizontal and that is such a strong and important part of the composition to my eye. The clouds are also a bit contrasty for my taste and compete with rather than complement the contrast and texture in the river. Some of the folks around here will find my last comment very ironic
since I often go over the top in my images (not saying you have overdone it); people here have been very helpful to me.