The reason Adobe said excessive post-processing is in their information on
that rejection. SO why not take off all your post-processing and upload a
clear clean photo. Might work. Better for you if you discover the answer by
reading all the information and samples Adobe is offering. It's free.
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thanks for responding to my post, joanh22203655! I didn't really do a lot of processing on this image. just eliminated the noise and adjusted the exposure and white balance. I thought this picture is a clear clean one so I uploaded it. The original photo is underexposed and has distortions because of low lights. Do you see any specific excessive processing that I need to modify?
The contrast is too high. It appears over sharpened.