I feel there are two subjects here. The water dragon and the waterfall. I feel the image would be stronger, if it were cropped at the bottom just above the curve in the tree trunk, on the right about and inch from the edge, and also on the left, to the edge of the waterfall. This will make the dragon the definite hero of the image. At present he is just a figure in the landscape. But your dragon is sharp, which is important.
