When you put love (or passion, or care, or devotion - whatever you want to term it) into something, it shows.
Horses feel this. The simple act of decorating a horse's bridle with a sunflower can add a whole new feel to not only the resulting image, but the horse's demeanor. (Well, some horses — we had a palomino gelding in a recent photoshoot who was not happy about the flowers in his mane.)
Care is an act of love. Love shows.
The next time you ride, put a little bit of extra care in some aspect of your tack — a flower, a bow, a simple act of something "extra" whatever that may mean to you.
This photo has is pretty much out of camera — only the standard edits for vibrance and black balance.