Lightroom Processing Critique

If you have been messing around in Lightroom for a while and post processing it is a good idea to check in and get critiqued on your images.  How do you know if you 'over-processed'? Is it sharpened correctly? Are the colors true? What else could you have done to make the image 'pop'. In this class students will bring in 3-5 images as the original file and then as a processed 'version'. From these files we will critique and see if the files could have been made better or are they perfect as is.  This is a MUST for any Lightroom user at any level.