Training your horse takes practice, practice, practice.  Horse treats come in very handy when training your horse to do something new.

The judges give you points based on how you are dressed, (English, Western, etc.), how you present yourself, how your horse behaves, how well tack fits you and your horse. 

Taking care of your horse involves exercising, feeding, watering, grooming, etc.  Spending time with your horse by taking care of it can help make a stronger relationship between you and your horse.