1. I am the world's greatest detective, if only by name.
-Kogoro has the same name as Kogoro Akechi and Mouri Kogoro(Richard Moore from Case Closed); Both of them are famous detectives, and rather prideful in Richard's case.
2. I have a deep connection to the Sindar.
-Kogoro is recruited in the Sindar Ruins by the Flame Champion. That's pretty deep.
3. I might make a good teacher...but only for young children.
His howl is "A-E-I-O-U".
4. I can walk the walk, but can't talk the talk; Someone often speaks for me.
He can stand on his hind legs, but Cecile translates for him.
5. As much as I'd like to have one, I am not a star of destiny.
-Kogoro is not a star.
6. There are many things I simply cannot do...and writing is one of them.
Dogs can't write. >_>;; Basically a different wording of clue number 4.
7. I love soup, but I don't like it when it's too hot.
-He loves cold Miso soup.
Good job. XD