The perspective does make the image appear a bit tilted. The line of trees is not perpendicular to the stream. I tried your suggestion of a tweak. A small tweak clockwise does "feel" better, but because there are no vertical lines (even the trees are crooked), I can't decide if it is accurate or an improvement.
Nice picture. I like the color and variety of trees in the background. The water is so inviting while calming at the same time. I really like what you've captured here.