You might find that a photo has a tilted horizon or converging lines that should be parallel. Don’t despair! You don’t need to delete these photos, just straighten them using Zoner Photo Studio.
There are a few basics that you must keep in mind if you want to take the kind of pictures that other people will enjoy looking at. Keeping a straight horizon is definitely one of them. Take care of this in-camera when you can. But when you can’t, all is not lost!