Hey! Thanks for making changes. However, it is important to remember that Narnia is based more or less on the medieval era in Europe.
From the Character Application Rules: -Your character should keep to the Narnia universe. They should not have superpowers, starships, a secret alien identity, etc. The technology of Narnia is medieval, with chainmail, swords, arrows and magic. There are no cannons, crossbows, guns, planes or cars.
More specifically to your character, there's no rock music, no business corporations, no phones, etc. Also, you still don't quite have things in line with the
Prince Caspian canon. Have you read the book or seen the movie? If not, I suggest you read the
Plot Summary on Wikipedia. All non-humans are currently in hiding (and are thought by the humans not to exist). So therefore, centaurs wouldn't exactly bring Jack to the king, for the king would likely have them killed.
I hope that helps! As before, let me know if you have questions!