There are a lot of factors that go into maintaining healthy, FUNCTIONAL hooves. Sometimes they do not look as pretty as some pictures you've seen, but they are what the horse needs in terms of balance and structure to maintain their comfort in motion. Anyone can sculpt a hoof into a perfect shape, but SOMETIMES THAT PERFECT SHAPE IS NOT WHAT THE HORSE NEEDS.
Recognizing what imperfections need to stay based on the backstory is half the battle.