Spray Kicker didn't win any favours from his family by walking away from his "destiny." He wanted to paint; they wanted him to serve. Spending time pursuing his true destiny was rewarding, except to the ponies who were related to him.
So, he dropped by Fort Lancer in the San Paolomino desert, accompanied by Twilight Velvet, one of Equestria's most accomplished authors, in search of inspiration. What he found was...himself. Himself, and a lot of other, less pleasant, things.
Tangentially part of the Winningverse.