Pair program as much as you can in this situation. You'll pick up a lot, and gain confidence to suggest improvements by starting with one-on-one interactions with your pair.
Then find a new partner, ideally someone less strong than your first partner where you feel even more confidence offering suggestions.
Repeat this process until you feel comfortable pairing with anyone on this team. Then you know you've made it.
Then find a new partner, ideally someone less strong than your first partner where you feel even more confidence offering suggestions.
Repeat this process until you feel comfortable pairing with anyone on this team. Then you know you've made it.