What else needs to go into this character? 
You have the bear's tattered heart inside the husk. 
The next thing that would happen in a Build-A-Bear store is that they open the back of the bear, hold it on a machine, and stuff it full of fluff. 
Now, fluff isn't meant to be a bad thing in this case. 
It's what is going to fill the character out and make it authentic. 
Let's find some fluff.