I recommend going with eBrnd's artistic judgement rather than my first suggestion. I was concentrating on the technology rather than asking the question "what does the image need to make it better?". The bottom part is washed out so it is clearly preferable to darken it rather than lighten the top!

There does seem to be more challenge (and many approaches) to dealing with the finishing details, such as the discontinuity and other possible artifacts introduced by the first-order fixup. Perhaps this is a general rule?
..jim