He looks very healthy, but also very scared/nervous...And I have to agree that his cage is far, far too small for him, I too noticed that in your first post a while ago...He's going to get much larger than he is now, BFA's are quite large as adults, and that cage is far too small for him now as a baby. That would be the very first thing I would do, get him an adequately large enough cage to house him, not one that he simply fits in...He should have many toys inside of his cage, many different types of toys, and he needs to not only be able to house all of the toys in his cage, but also be able to not touch any of them and still fully open his wings up and not have them or his tail touch any cage bars or toys, and still be able to freely play, swing, jump, climb, etc. The cages I have for my little Green Cheek Conure, my Quaker Parrot, and my Senegal Parrot are all much larger than your BFA's current cage...Laura is correct, living in such a small cage can cause behavioral issues, territorial issues, anxiety, and most of all Feather-Destructive Behaviors such as plucking and barbering, and even Self-Mutilation...So that would be step #1.
It sounds like you want to bond more-closely with your bird, and to hand-tame him more than he is as of now. Beyond getting him an adequate cage and toys/activities, this is going to be a marathon, not a sprint, and it's involves keeping his cage in the "main room" of your house, like the living room, wherever the people of your house spend most of their time when they are home, and not in a back bedroom or other room...He needs to be around/with his people, visitors, etc. People walking past his cage, sitting in the same room interacting and living and him seeing this will help to socialize him, but also you have to remember that he's a "flock" animal. So he needs to be in with his "flock" when you are home, which is you and your family who live in the house.