What are some common mistakes that are made in post-processing?

(1 point)
not using the sharpening tool at all or not smoothing
adding too much color saturation or over-lightening the shadows
not adding enough fluorescent tones
adding too much white to the black areas

overuse of filters or presets

not paying attention to detail and making sloppy edits
ignoring the original lighting and composition of the image
over-editing and ending up with an unnatural final result