Reprocessing some of your old photos can be an interesting experience. Your photo processing skill will have most certainly changed and our taste for different color pallets might have changed. The software you process photos with will have changed to a new version or you may be using new software altogether. All of this will lead to photos that look similar or even nothing like the photos you came up with a few years ago.
Revisit some of those older photos and play with them to see what you might be able to do with them now. It’s never too late to turn a photo that you may have never looked in the past into one that you are now very proud of.